---
title: whats the big deal with the third rail — Trains, the Underground and subways · tree and pragmatics
description: whats the big deal with the third rail Test 15 · ★ of lesson 270 «Trains, the Underground and subways» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 15 · ★ · Trains, the Underground and subways

<!-- .ven lang=en -->
whats the big deal with the third rail

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗

<!-- .vabout -->
This is test 15 · ★ of lesson 270 «Trains, the Underground and subways» of the everyday 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/everyday/270-trains-and-subways/#t15).

## The question {#question}

```conllu
# sent_id = question:everyday:270-trains-and-subways:t15:1
# text = whats the big deal with the third rail
1	whats	what	NOUN	NNS	Number=Plur	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	big	big	ADJ	JJ	Degree=Pos	4	amod	_	_
4	deal	deal	NOUN	NN	Number=Sing	1	appos	_	_
5	with	with	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	third	third	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Ord	8	amod	_	_
8	rail	rail	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
It only works at night

```conllu
# sent_id = question:everyday:270-trains-and-subways:t15:o1:1
# text = It only works at night
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	works	work	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	at	at	ADP	IN	_	5	case	_	_
5	night	night	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work** | present | It |  |  |  | night |  | vn employment-95.3 «NP V»: agent=Agent |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
It carries electricity strong enough to kill

```conllu
# sent_id = question:everyday:270-trains-and-subways:t15:o2:1
# text = It carries electricity strong enough to kill
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	carries	carry	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	electricity	electricity	NOUN	NN	Number=Sing	2	obj	_	_
4	strong	strong	ADJ	JJ	Degree=Pos	2	xcomp	_	_
5	enough	enough	ADV	RB	_	4	advmod	_	_
6	to	to	PART	TO	_	7	mark	_	_
7	kill	kill	VERB	VB	VerbForm=Inf	4	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **carry** | present | It | electricity |  |  |  | strong *property* | vn carry-11.4 «NP V NP»: agent=Agent electricity=Theme |
| 2 | **kill** | to-infinitive |  |  |  |  |  |  | vn amuse-31.1 «NP V ADV-Middle»: agent=Experiencer |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is only a little warm to the touch

```conllu
# sent_id = question:everyday:270-trains-and-subways:t15:o3:1
# text = It is only a little warm to the touch
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
3	only	only	ADV	RB	_	6	advmod	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	little	little	ADJ	JJ	Degree=Pos	6	obl:unmarked	_	_
6	warm	warm	ADJ	JJ	Degree=Pos	0	root	_	_
7	to	to	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	touch	touch	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | to the touch; a little *obl:unmarked*; warm *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is there to hold the trains up on the track

```conllu
# sent_id = question:everyday:270-trains-and-subways:t15:o4:1
# text = It is there to hold the trains up on the track
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	there	there	PRON	EX	PronType=Dem	5	expl	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	hold	hold	VERB	VB	VerbForm=Inf	0	root	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	trains	train	NOUN	NNS	Number=Plur	5	obj	_	_
8	up	up	ADP	RP	_	5	compound:prt	_	_
9	on	on	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	track	track	NOUN	NN	Number=Sing	5	obl	_	_
```

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

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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.

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- ← previous: [Trains, the Underground and subways, test 14](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/270-trains-and-subways/t14/)
- next →: [Trains, the Underground and subways, test 16](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/270-trains-and-subways/t16/)
- ↑ back to [Trains, the Underground and subways](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/270-trains-and-subways/)