---
title: Why can you easily lift a heavy friend in the pool but not on land? — Water safety and the ocean · tree and pragmatics
description: Why can you easily lift a heavy friend in the pool but not on land? Test 10 · ★★★ 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 10 · ★★★ · Water safety and the ocean

<!-- .ven lang=en -->
Why can you easily lift a heavy friend in the pool but not on land?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** you · **What happens:** lift · **To what, where:** heavy friend, pool

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This is test 10 · ★★★ 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/#t10).

## The question {#question}

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t10:1
# text = Why can you easily lift a heavy friend in the pool but not on land?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	can	can	AUX	MD	VerbForm=Fin	5	aux	_	_
3	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	5	nsubj	_	_
4	easily	easily	ADV	RB	_	5	advmod	_	_
5	lift	lift	VERB	VBP	Mood=Ind|Person=2|Tense=Pres|VerbForm=Fin	0	root	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	heavy	heavy	ADJ	JJ	Degree=Pos	8	amod	_	_
8	friend	friend	NOUN	NN	Number=Sing	5	obj	_	_
9	in	in	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	pool	pool	NOUN	NN	Number=Sing	5	obl	_	_
12	but	but	CCONJ	CC	_	15	cc	_	_
13	not	not	PART	RB	Polarity=Neg	15	advmod	_	_
14	on	on	ADP	IN	_	15	case	_	_
15	land	land	NOUN	NN	Number=Sing	11	conj	_	SpaceAfter=No
16	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lift** | can | you | a heavy friend |  | the pool but land |  | easily *property* | vn put\_direction-9.4 «NP V NP PP.destination»: agent=Agent friend=Theme in pool=Destination |

<!-- .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 -->
Your arms get stronger in water

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t10:o1:1
# text = Your arms get stronger in water
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	arms	arm	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	get	get	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	stronger	strong	ADJ	JJR	Degree=Cmp	3	xcomp	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	water	water	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present | Your arms |  |  | water |  | strong *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

### Option 2 {#o2}

<!-- .ven lang=en -->
Your friend breathes out all the air

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t10:o2:1
# text = Your friend breathes out all the air
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	friend	friend	NOUN	NN	Number=Sing	3	nsubj	_	_
3	breathes	breathe	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	out	out	ADP	RP	_	3	compound:prt	_	_
5	all	all	DET	PDT	PronType=Tot	7	det:predet	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	air	air	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **breathe out** | present | Your friend | all air |  |  |  |  | vn breathe-40.1.2-1 «NP V NP»: agent=Agent air=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Wet skin is easier to grip

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t10:o3:1
# text = Wet skin is easier to grip
1	Wet	wet	ADJ	JJ	Degree=Pos	2	amod	_	_
2	skin	skin	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	easier	easy	ADJ	JJR	Degree=Cmp	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	grip	grip	VERB	VB	VerbForm=Inf	4	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Wet skin |  |  |  |  | easy *property* | tree rules |
| 2 | **grip** | to-infinitive | Wet skin *not said here* |  |  |  |  |  | vn touch-20-1 «NP V NP»: agent=Agent |

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

<!-- .ven lang=en -->
Water holds up most of their weight

```conllu
# sent_id = question:physics:13-water-safety-and-the-ocean:t10:o4:1
# text = Water holds up most of their weight
1	Water	water	NOUN	NN	Number=Sing	2	nsubj	_	_
2	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	up	up	ADP	RP	_	2	compound:prt	_	_
4	most	most	ADJ	JJS	Degree=Sup	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	weight	weight	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold up** | present | Water | most of their weight |  |  |  |  | vn support-15.3-1 «NP V NP»: agent=Pivot most=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: [Water safety and the ocean, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/t9/)
- next →: [Water safety and the ocean, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/t11/)
- ↑ back to [Water safety and the ocean](https://md.mova.elamur.ai/free/en/corpora/questions/physics/13-water-safety-and-the-ocean/)