---
title: Why should you never cross a railway when the barriers are down, eve… — Seat belts, crashes and keeping safe · tree and pragmatics
description: Why should you never cross a railway when the barriers are down, even if the train looks far away? Test 10 · ★ of lesson 37 «Seat belts, crashes and keeping safe» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice
---

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# Test 10 · ★ · Seat belts, crashes and keeping safe

<!-- .ven lang=en -->
Why should you never cross a railway when the barriers are down, even if the train looks far away?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** you, barriers, train · **What happens:** not cross, be, look · **To what, where:** railway

<!-- .vabout -->
This is test 10 · ★ of lesson 37 «Seat belts, crashes and keeping safe» of the physics 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/physics/37-seat-belts-crashes-and-keeping-safe/#t10).

## The question {#question}

```conllu
# sent_id = question:physics:37-seat-belts-crashes-and-keeping-safe:t10:1
# text = Why should you never cross a railway when the barriers are down, even if the train looks far away?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	should	should	AUX	MD	VerbForm=Fin	5	aux	_	_
3	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	5	nsubj	_	_
4	never	never	ADV	RB	PronType=Neg	5	advmod	_	_
5	cross	cross	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	12	advcl	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	railway	railway	NOUN	NN	Number=Sing	5	obj	_	_
8	when	when	ADV	WRB	PronType=Int	12	advmod	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	barriers	barrier	NOUN	NNS	Number=Plur	12	nsubj	_	_
11	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
12	down	down	ADV	RB	_	0	root	_	SpaceAfter=No
13	,	,	PUNCT	,	_	18	punct	_	_
14	even	even	ADV	RB	_	18	advmod	_	_
15	if	if	SCONJ	IN	_	18	mark	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	train	train	NOUN	NN	Number=Sing	18	nsubj	_	_
18	looks	look	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	advcl	_	_
19	far	far	ADV	RB	Degree=Pos	20	advmod	_	_
20	away	away	ADV	RB	_	18	advmod	_	SpaceAfter=No
21	?	?	PUNCT	.	_	12	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **cross** | should | you | a railway |  |  |  |  | vn crane-40.3.2 «NP V NP»: agent=Agent railway=Patient |
| 2 | **is** | present | the barriers |  |  |  |  | down *property* | tree rules |
| 3 | **look** *a condition, not said to happen* | present | the train |  |  |  |  | away *property* | vn stimulus\_subject-30.4 «NP V PP.attribute»: agent=Stimulus |

<!-- .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.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Trains always stop for people

```conllu
# sent_id = question:physics:37-seat-belts-crashes-and-keeping-safe:t10:o1:1
# text = Trains always stop for people
1	Trains	train	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	always	always	ADV	RB	PronType=Tot	3	advmod	_	_
3	stop	stop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	people	people	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | present | Trains |  |  |  |  | for people; always *property* | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Trains are fast and need a very long way to stop

```conllu
# sent_id = question:physics:37-seat-belts-crashes-and-keeping-safe:t10:o2:1
# text = Trains are fast and need a very long way to stop
1	Trains	train	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	fast	fast	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
7	very	very	ADV	RB	_	8	advmod	_	_
8	long	long	ADJ	JJ	Degree=Pos	9	amod	_	_
9	way	way	NOUN	NN	Number=Sing	5	obj	_	_
10	to	to	PART	TO	_	11	mark	_	_
11	stop	stop	VERB	VB	VerbForm=Inf	9	acl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Trains |  |  |  |  | fast *property* | tree rules |
| 2 | **need** | present | Trains *not said here* | a long way |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot way=Theme |
| 3 | **stop** | to-infinitive | Trains *not said here* | a long way *not said here* |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |

### Option 3 {#o3}

<!-- .ven lang=en -->
The barriers are only for cars, so walkers can go round them

```conllu
# sent_id = question:physics:37-seat-belts-crashes-and-keeping-safe:t10:o3:1
# text = The barriers are only for cars, so walkers can go round them
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	barriers	barrier	NOUN	NNS	Number=Plur	6	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	only	only	ADV	RB	_	6	advmod	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	cars	car	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
7	,	,	PUNCT	,	_	11	punct	_	_
8	so	so	ADV	RB	_	11	advmod	_	_
9	walkers	walker	NOUN	NNS	Number=Plur	11	nsubj	_	_
10	can	can	AUX	MD	VerbForm=Fin	11	aux	_	_
11	go	go	VERB	VB	VerbForm=Inf	6	parataxis	_	_
12	round	round	ADP	IN	_	13	case	_	_
13	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	11	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the barriers |  |  |  |  | for cars | tree rules |
| 2 | **go** | can | walkers |  |  |  |  | round barriers *= barrier* | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme round they=Initial\_Location |

### Option 4 {#o4}

<!-- .ven lang=en -->
Trains can steer round people

```conllu
# sent_id = question:physics:37-seat-belts-crashes-and-keeping-safe:t10:o4:1
# text = Trains can steer round people
1	Trains	train	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	_	_
3	steer	steer	VERB	VB	VerbForm=Inf	0	root	_	_
4	round	round	ADP	IN	_	5	case	_	_
5	people	people	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **steer** | can | Trains |  |  |  |  | round people | vn accompany-51.7 «NP V NP PP.destination»: agent=Agent round people=Destination |

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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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