---
title: Two children try to move a boulder with the same bar. One holds it n… — Thinking it through — forces, heat, li… · tree and pragmatics
description: Two children try to move a boulder with the same bar. One holds it near the pivot, the other at the far end. Who needs less force? Test 4 · ★★★ of lesson 60 «Thinking it through — forces, heat, light and energy» of the world course of Mova's primary school, with the dependency tree and pragmatics of
---

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# Test 4 · ★★★ · Thinking it through — forces, heat, light and energy

<!-- .ven lang=en -->
Two children try to move a boulder with the same bar. One holds it near the pivot, the other at the far end. Who needs less force?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 3 · wrong ✗ · **Who acts:** Two children, One · **What happens:** try, move, hold, need · **To what, where:** boulder, pivot, less force

<!-- .vabout -->
This is test 4 · ★★★ of lesson 60 «Thinking it through — forces, heat, light and energy» of the world 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/world/60-reasoning-energy-technology/#t4).

## The question {#question}

<!-- .note -->
*Sentence 1:* Two children try to move a boulder with the same bar.

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:1
# text = Two children try to move a boulder with the same bar.
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	children	child	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	try	try	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	move	move	VERB	VB	VerbForm=Inf	3	xcomp	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	boulder	boulder	NOUN	NN	Number=Sing	5	obj	_	_
8	with	with	ADP	IN	_	11	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	same	same	ADJ	JJ	Degree=Pos	11	amod	_	_
11	bar	bar	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **try** | present | Two children |  |  |  |  |  | vn try-61.1 «NP V S\_INF»: agent=Agent clause=Eventuality |
| 2 | **move** *not said to happen* | to-infinitive | Two children *not said here* | a boulder |  |  |  | with the same bar | vn roll-51.3.1 «NP V NP.theme»: agent=Agent boulder=Theme |

<!-- .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.

<!-- .note -->
*Sentence 2:* One holds it near the pivot, the other at the far end.

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:2
# text = One holds it near the pivot, the other at the far end.
1	One	one	NUM	CD	NumForm=Word|NumType=Card	2	nsubj	_	_
2	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	obj	_	_
4	near	near	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	pivot	pivot	NOUN	NN	Number=Sing	2	obl	_	SpaceAfter=No
7	,	,	PUNCT	,	_	9	punct	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	other	other	ADJ	JJ	Degree=Pos	6	amod	_	_
10	at	at	ADP	IN	_	13	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	far	far	ADJ	JJ	Degree=Pos	13	amod	_	_
13	end	end	NOUN	NN	Number=Sing	9	obl	_	SpaceAfter=No
14	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | present | One | boulder |  | the pivot |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent it=Theme near pivot=Location |

<!-- .note -->
*Sentence 3:* Who needs less force?

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:3
# text = Who needs less force?
1	Who	who	PRON	WP	PronType=Rel	2	nsubj	_	_
2	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	less	less	ADJ	JJR	Degree=Cmp	4	amod	_	_
4	force	force	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
5	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present |  | less force |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot force=Theme |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Neither, since bars do not help

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:o1:1
# text = Neither, since bars do not help
1	Neither	neither	ADV	RB	_	7	advmod	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	since	since	ADP	IN	_	4	case	_	_
4	bars	bar	NOUN	NNS	Number=Plur	7	obl	_	_
5	do	do	AUX	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	7	aux	_	_
6	not	not	PART	RB	Polarity=Neg	7	advmod	_	_
7	help	help	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **help** | present · do-support |  |  |  |  | since bars | neither *property* | vn help-72.1-1-1 «NP V PP.theme»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
The one holding near the pivot

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:o2:1
# text = The one holding near the pivot
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	one	one	NOUN	NN	Number=Sing	0	root	_	_
3	holding	hold	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	near	near	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	pivot	pivot	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | gerund | the one *not said here* |  |  | the pivot |  |  | vn exist-47.1 «NP V PP.location»: agent=Theme near pivot=Location |

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

<!-- .ven lang=en -->
The one holding the far end

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:o3:1
# text = The one holding the far end
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	one	one	NOUN	NN	Number=Sing	0	root	_	_
3	holding	hold	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	far	far	ADJ	JJ	Degree=Pos	6	amod	_	_
6	end	end	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | gerund | the one *not said here* | the far end |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent end=Theme |

### Option 4 · ← Mova's choice {#o4}

<!-- .ven lang=en -->
They need exactly the same force

```conllu
# sent_id = question:world:60-reasoning-energy-technology:t4:o4:1
# text = They need exactly the same force
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	exactly	exactly	ADV	RB	_	6	advmod	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	same	same	ADJ	JJ	Degree=Pos	6	amod	_	_
6	force	force	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | They | the same force |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot force=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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