---
title: Which stands most safely on a bus? — Balance: the centre of gravity · tree and pragmatics
description: Which stands most safely on a bus? Test 11 · ★ of lesson 8 «Balance: the centre of gravity» 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 wrong.
---

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# Test 11 · ★ · Balance: the centre of gravity

<!-- .ven lang=en -->
Which stands most safely on a bus?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **What happens:** stand · **To what, where:** bus

<!-- .vabout -->
This is test 11 · ★ of lesson 8 «Balance: the centre of gravity» 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/8-balance-the-centre-of-gravity/#t11).

## The question {#question}

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:t11:1
# text = Which stands most safely on a bus?
1	Which	which	PRON	WDT	PronType=Rel	2	nsubj	_	_
2	stands	stand	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	most	most	ADV	RBS	Degree=Sup	4	advmod	_	_
4	safely	safely	ADV	RB	_	2	advmod	_	_
5	on	on	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	bus	bus	NOUN	NN	Number=Sing	2	obl	_	SpaceAfter=No
8	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stand** | present |  |  |  | a bus |  | safely *property* | vn assuming\_position-50 «NP V PP.location»: agent=Agent on bus=Location |

<!-- .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 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Feet together on tiptoe

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:t11:o1:1
# text = Feet together on tiptoe
1	Feet	foot	NOUN	NNS	Number=Plur	0	root	_	_
2	together	together	ADV	RB	_	1	advmod	_	_
3	on	on	ADP	IN	_	4	case	_	_
4	tiptoe	tiptoe	NOUN	NN	Number=Sing	1	nmod	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
Standing tall with feet close

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:t11:o2:1
# text = Standing tall with feet close
1	Standing	stand	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
2	tall	tall	ADJ	JJ	Degree=Pos	1	xcomp	_	_
3	with	with	ADP	IN	_	4	case	_	_
4	feet	foot	NOUN	NNS	Number=Plur	1	obl	_	_
5	close	close	ADJ	JJ	Degree=Pos	1	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stand** | gerund |  |  |  |  |  | with feet; tall *property* | vn assuming\_position-50 «NP V»: agent=Agent |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Feet wide apart, knees a bit bent

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:t11:o3:1
# text = Feet wide apart, knees a bit bent
1	Feet	foot	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	wide	wide	ADV	RB	_	3	advmod	_	_
3	apart	apart	ADV	RB	_	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	5	punct	_	_
5	knees	knee	NOUN	NNS	Number=Plur	3	obl	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	bit	bit	NOUN	NN	Number=Sing	8	obl:unmarked	_	_
8	bent	bend	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bend** | participle | knees *not said here* | a bit |  |  |  |  | vn assuming\_position-50 «NP V»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
One foot, arms up

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:t11:o4:1
# text = One foot, arms up
1	One	one	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	foot	foot	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	4	punct	_	_
4	arms	arm	NOUN	NNS	Number=Plur	2	conj	_	_
5	up	up	ADV	RB	_	4	advmod	_	_
```

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

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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: [Balance: the centre of gravity, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/physics/8-balance-the-centre-of-gravity/t10/)
- next →: [Balance: the centre of gravity, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/physics/8-balance-the-centre-of-gravity/e1/)
- ↑ back to [Balance: the centre of gravity](https://md.mova.elamur.ai/free/en/corpora/questions/physics/8-balance-the-centre-of-gravity/)