---
title: Ben says trains need long brakes because the wheels are made of rubb… — Trains and the Underground · tree and pragmatics
description: Ben says trains need long brakes because the wheels are made of rubber that slides. What is right? Test 6 of lesson 21 «Trains and the Underground» of the technology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 6 · Trains and the Underground

<!-- .ven lang=en -->
Ben says trains need long brakes because the wheels are made of rubber that slides. What is right?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** Ben, trains, rubber · **What happens:** say, need, make, slide, be · **To what, where:** long brakes, wheels · **Speech:** someone speaks here

<!-- .vabout -->
This is test 6 of lesson 21 «Trains and the Underground» of the technology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/technology/21-trains-and-the-underground/#t6).

## The question {#question}

<!-- .note -->
*Sentence 1:* Ben says trains need long brakes because the wheels are made of rubber that slides.

```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:1
# text = Ben says trains need long brakes because the wheels are made of rubber that slides.
1	Ben	Ben	PROPN	NNP	Number=Sing	2	nsubj	_	_
2	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	trains	train	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
5	long	long	ADJ	JJ	Degree=Pos	6	amod	_	_
6	brakes	brake	NOUN	NNS	Number=Plur	4	obj	_	_
7	because	because	SCONJ	IN	_	11	mark	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	wheels	wheel	NOUN	NNS	Number=Plur	11	nsubj:pass	_	_
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	_	_
11	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	advcl	_	_
12	of	of	ADP	IN	_	13	case	_	_
13	rubber	rubber	NOUN	NN	Number=Sing	11	obl	_	_
14	that	that	PRON	WDT	PronType=Rel	15	nsubj	_	_
15	slides	slide	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	acl:relcl	_	SpaceAfter=No
16	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Ben |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **need** | present | trains | long brakes |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot brake=Theme |
| 3 | **make** | present · passive |  | the wheels |  |  |  | of rubber | vn build-26.1-1 «NP.asset V NP»: subject=Product |
| 4 | **slide** | present | rubber |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

<!-- .note -->
*Sentence 2:* What is right?

```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:2
# text = What is right?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	right	right	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | right *property* | tree rules |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Yes, rubber wheels slide on wet rails

```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:o1:1
# text = Yes, rubber wheels slide on wet rails
1	Yes	yes	INTJ	UH	Polarity=Pos	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	5	punct	_	_
3	rubber	rubber	NOUN	NN	Number=Sing	4	compound	_	_
4	wheels	wheel	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	slide	slide	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	on	on	ADP	IN	_	8	case	_	_
7	wet	wet	ADJ	JJ	Degree=Pos	8	amod	_	_
8	rails	rail	NOUN	NNS	Number=Plur	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **slide** | present | rubber wheels |  |  | wet rails |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme on rail=Trajectory |

### Option 2 {#o2}

<!-- .ven lang=en -->
Yes, and that is why trains slow down in rain only

```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:o2:1
# text = Yes, and that is why trains slow down in rain only
1	Yes	yes	INTJ	UH	Polarity=Pos	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	and	and	CCONJ	CC	_	6	cc	_	_
4	that	that	PRON	DT	Number=Sing|PronType=Dem	6	nsubj	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
6	why	why	ADV	WRB	PronType=Int	8	advmod	_	_
7	trains	train	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	slow	slow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	down	down	ADP	RP	_	8	compound:prt	_	_
10	in	in	ADP	IN	_	11	case	_	_
11	rain	rain	NOUN	NN	Number=Sing	8	obl	_	_
12	only	only	ADV	RB	_	8	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | that |  |  |  |  | why *property* | tree rules |
| 2 | **slow down** | present | trains |  |  | rain |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
No, trains could stop fast, but drivers like to brake slowly so nobody spills their drinks

<!-- fold The tree, 16 words -->
```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:o3:1
# text = No, trains could stop fast, but drivers like to brake slowly so nobody spills their drinks
1	No	no	INTJ	UH	Polarity=Neg	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	trains	train	NOUN	NNS	Number=Plur	5	nsubj	_	_
4	could	could	AUX	MD	VerbForm=Fin	5	aux	_	_
5	stop	stop	VERB	VB	VerbForm=Inf	0	root	_	_
6	fast	fast	ADV	RB	Degree=Pos	5	advmod	_	SpaceAfter=No
7	,	,	PUNCT	,	_	10	punct	_	_
8	but	but	CCONJ	CC	_	10	cc	_	_
9	drivers	driver	NOUN	NNS	Number=Plur	10	nsubj	_	_
10	like	like	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	parataxis	_	_
11	to	to	PART	TO	_	12	mark	_	_
12	brake	break	VERB	VB	VerbForm=Inf	10	xcomp	_	_
13	slowly	slowly	ADV	RB	_	12	advmod	_	_
14	so	so	SCONJ	IN	_	16	mark	_	_
15	nobody	nobody	PRON	NN	Number=Sing|PronType=Neg	16	nsubj	_	_
16	spills	spill	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
17	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	18	nmod:poss	_	_
18	drinks	drink	NOUN	NNS	Number=Plur	16	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | could | trains |  |  |  |  | fast *property* | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |
| 2 | **like** | present | drivers |  |  |  |  |  | vn want-32.1-1-1 «NP V NP S\_INF»: agent=Pivot clause=Theme |
| 3 | **break** *not said to happen* | to-infinitive | drivers *not said here* |  |  |  |  | slowly *property* | vn hurt-40.8.3-1-1 «NP V»: agent=Patient |
| 4 | **spill** | present | nobody | drivers's drinks |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location drink=Theme |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
No, the wheels are steel and roll so easily on steel rails that stopping takes long

<!-- fold The tree, 16 words -->
```conllu
# sent_id = question:technology:21-trains-and-the-underground:t6:o4:1
# text = No, the wheels are steel and roll so easily on steel rails that stopping takes long
1	No	no	INTJ	UH	Polarity=Neg	6	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	wheels	wheel	NOUN	NNS	Number=Plur	6	nsubj	_	_
5	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
6	steel	steel	NOUN	NN	Number=Sing	0	root	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	roll	roll	NOUN	NN	Number=Sing	6	conj	_	_
9	so	so	ADV	RB	_	10	advmod	_	_
10	easily	easily	ADV	RB	_	6	advmod	_	_
11	on	on	ADP	IN	_	13	case	_	_
12	steel	steel	NOUN	NN	Number=Sing	13	compound	_	_
13	rails	rail	NOUN	NNS	Number=Plur	6	conj	_	_
14	that	that	SCONJ	IN	_	16	mark	_	_
15	stopping	stop	VERB	VBG	VerbForm=Ger	16	nsubj	_	_
16	takes	take	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	advcl	_	_
17	long	long	ADJ	JJ	Degree=Pos	16	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | the wheels | steel and roll and steel rails |  |  |  | easily *property* | tree rules |
| 2 | **stop** | gerund |  |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |
| 3 | **take** | present |  |  |  |  |  | long *property* | vn bring-11.3 «NP V NP»: agent=Agent |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

<!-- pn -->
- ← previous: [Trains and the Underground, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/technology/21-trains-and-the-underground/t5/)
- next →: [Trains and the Underground, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/technology/21-trains-and-the-underground/t7/)
- ↑ back to [Trains and the Underground](https://md.mova.elamur.ai/free/en/corpora/questions/technology/21-trains-and-the-underground/)