---
title: Why does a lorry not fall through the ice of a frozen northern lake? — Water safety and the ocean · tree and pragmatics
description: Why does a lorry not fall through the ice of a frozen northern lake? Test 12 · ★★★ of lesson 13 «Water safety and the ocean» 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 was right.
---

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# Test 12 · ★★★ · Water safety and the ocean

<!-- .ven lang=en -->
Why does a lorry not fall through the ice of a frozen northern lake?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **What happens:** not fall, freeze · **To what, where:** ice

<!-- .vabout -->
This is test 12 · ★★★ of lesson 13 «Water safety and the ocean» 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/13-water-safety-and-the-ocean/#t12).

## The question {#question}

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t12:1
# text = Why does a lorry not fall through the ice of a frozen northern lake?
1	Why	why	ADV	WRB	PronType=Int	6	advmod	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	lorry	lorry	NOUN	NN	Number=Sing	2	obj	_	_
5	not	not	PART	RB	Polarity=Neg	6	advmod	_	_
6	fall	fall	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
7	through	through	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	ice	ice	NOUN	NN	Number=Sing	6	obl	_	_
10	of	of	ADP	IN	_	14	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
12	frozen	freeze	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	14	amod	_	_
13	northern	northern	ADJ	JJ	Degree=Pos	14	amod	_	_
14	lake	lake	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
15	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **fall** | present · do-support |  |  |  | the ice of a frozen northern lake |  |  | vn occur-48.3 «NP V PP»: agent=Theme through ice=Location |
| 2 | **freeze** | participle |  |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

<!-- .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 -->
The lorry has no weight on ice

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t12:o1:1
# text = The lorry has no weight on ice
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	lorry	lorry	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	no	no	DET	DT	PronType=Neg	5	det	_	_
5	weight	weight	NOUN	NN	Number=Sing	3	obj	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	ice	ice	NOUN	NN	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | the lorry | no weight |  | ice |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent weight=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
The water below holds the lorry

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t12:o2:1
# text = The water below holds the lorry
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	water	water	NOUN	NN	Number=Sing	4	nsubj	_	_
3	below	below	ADV	RB	_	2	advmod	_	_
4	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	lorry	lorry	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | present | the water | the lorry |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent lorry=Theme |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The ice is thick and very cold

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t12:o3:1
# text = The ice is thick and very cold
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	ice	ice	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	thick	thick	ADJ	JJ	Degree=Pos	0	root	_	_
5	and	and	CCONJ	CC	_	7	cc	_	_
6	very	very	ADV	RB	_	7	advmod	_	_
7	cold	cold	ADJ	JJ	Degree=Pos	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the ice |  |  |  |  | thick *property* | tree rules |
| 2 | **be** |  | the ice *not said here* |  |  |  |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
The lorry is driven very fast

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t12:o4:1
# text = The lorry is driven very fast
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	lorry	lorry	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	driven	drive	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	very	very	ADV	RB	_	6	advmod	_	_
6	fast	fast	ADV	RB	Degree=Pos	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drive** | present · passive |  | the lorry |  |  |  | fast *property* | vn nonvehicle-51.4.2-1 «NP V PP»: subject=Trajectory |

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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: [Water safety and the ocean, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/t11/)
- next →: [Water safety and the ocean, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/e1/)
- ↑ back to [Water safety and the ocean](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/)