---
title: Which is true about a siren? — Sounds that warn · tree and pragmatics
description: Which is true about a siren? Test 4 of lesson 12 «Sounds that warn» 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 right.
---

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# Test 4 · Sounds that warn

<!-- .ven lang=en -->
Which is true about a siren?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **What happens:** be

<!-- .vabout -->
This is test 4 of lesson 12 «Sounds that warn» 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/12-sounds-that-warn/#t4).

## The question {#question}

```conllu
# sent_id = question:everyday:12-sounds-that-warn:t4:1
# text = Which is true about a siren?
1	Which	which	PRON	WDT	PronType=Rel	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	_
4	about	about	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	siren	siren	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
7	?	?	PUNCT	.	_	3	punct	_	_
```

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

<!-- .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 -->
It means you must cross the road quickly

```conllu
# sent_id = question:everyday:12-sounds-that-warn:t4:o1:1
# text = It means you must cross the road quickly
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	5	nsubj	_	_
4	must	must	AUX	MD	VerbForm=Fin	5	aux	_	_
5	cross	cross	VERB	VB	VerbForm=Inf	2	ccomp	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	road	road	NOUN	NN	Number=Sing	5	obj	_	_
8	quickly	quickly	ADV	RB	_	5	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mean** | present | It |  |  |  |  |  | vn intend-61.2-1 «NP V S»: agent=Agent clause=Topic |
| 2 | **cross** | must | you | the road |  |  |  | quickly *property* | vn crane-40.3.2 «NP V NP»: agent=Agent road=Patient |

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

<!-- .ven lang=en -->
It warns that an emergency vehicle is coming

```conllu
# sent_id = question:everyday:12-sounds-that-warn:t4:o2:1
# text = It warns that an emergency vehicle is coming
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	warns	warn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	that	that	SCONJ	IN	_	8	mark	_	_
4	an	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	emergency	emergency	NOUN	NN	Number=Sing	6	compound	_	_
6	vehicle	vehicle	NOUN	NN	Number=Sing	8	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	aux	_	_
8	coming	come	VERB	VBG	Tense=Pres|VerbForm=Part	2	ccomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **warn** *speech: warn* | present | It |  |  |  |  |  | vn advise-37.9-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **come** | present · progressive | a emergency vehicle |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
It means the traffic lights have broken

```conllu
# sent_id = question:everyday:12-sounds-that-warn:t4:o3:1
# text = It means the traffic lights have broken
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	traffic	traffic	NOUN	NN	Number=Sing	5	compound	_	_
5	lights	light	NOUN	NNS	Number=Plur	7	nsubj:pass	_	_
6	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	aux	_	_
7	broken	break	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	ccomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mean** | present | It |  |  |  |  |  | vn intend-61.2-1 «NP V S»: agent=Agent clause=Topic |
| 2 | **break** | present · perfect · passive |  | the traffic lights |  |  |  |  | vn hurt-40.8.3-1-1 «NP V NP»: subject=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
It only sounds when there is a fire

```conllu
# sent_id = question:everyday:12-sounds-that-warn:t4:o4:1
# text = It only sounds when there is a fire
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	sounds	sound	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	when	when	ADV	WRB	PronType=Int	6	advmod	_	_
5	there	there	PRON	EX	PronType=Dem	6	expl	_	_
6	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	fire	fire	NOUN	NN	Number=Sing	6	nsubj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **sound** | present | It |  |  |  |  |  | vn stimulus\_subject-30.4 «NP V PP.attribute»: agent=Stimulus |
| 2 | **be** | present | a fire |  |  | there |  |  | vn exist-47.1 «NP V»: agent=Theme |

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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: [Sounds that warn, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/12-sounds-that-warn/t3/)
- next →: [Sounds that warn, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/12-sounds-that-warn/t5/)
- ↑ back to [Sounds that warn](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/12-sounds-that-warn/)