---
title: It is given that two books are interleaved page by page. Ascertain t… — Living with friction: oil, wheels and… · tree and pragmatics
description: It is given that two books are interleaved page by page. Ascertain the reason for which they resist separation. Exam question 3 of lesson 7 «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each
---

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# Exam question 3 · Living with friction: oil, wheels and grip

<!-- .ven lang=en -->
It is given that two books are interleaved page by page. Ascertain the reason for which they resist separation.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** page, you, books · **What happens:** give, interleave, ascertain, resist · **To what, where:** It, two books, reason, separation

<!-- .vabout -->
This is exam question 3 of lesson 7 «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school, asked in stiff, formal language. 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/7-living-with-friction/#e3).

## The question {#question}

<!-- .note -->
*Sentence 1:* It is given that two books are interleaved page by page.

```conllu
# sent_id = question:physics:7-living-with-friction:e3:1
# text = It is given that two books are interleaved page by page.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	that	that	SCONJ	IN	_	8	mark	_	_
5	two	two	NUM	CD	NumForm=Word|NumType=Card	6	nummod	_	_
6	books	book	NOUN	NNS	Number=Plur	8	nsubj:pass	_	_
7	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	aux:pass	_	_
8	interleaved	interleave	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
9	page	page	NOUN	NN	Number=Sing	8	obj	_	_
10	by	by	ADP	IN	_	11	case	_	_
11	page	page	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | present · passive |  | It |  |  |  |  | vn give-13.1-1 «NP V NP»: subject=Theme |
| 2 | **interleave** | present · passive | page | two books |  |  |  |  | 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.

<!-- .note -->
*Sentence 2:* Ascertain the reason for which they resist separation.

```conllu
# sent_id = question:physics:7-living-with-friction:e3:2
# text = Ascertain the reason for which they resist separation.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	which	which	PRON	WDT	PronType=Rel	7	obl	_	_
6	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
7	resist	resist	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	_
8	separation	separation	NOUN	NN	Number=Sing	7	obj	_	SpaceAfter=No
9	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the reason |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent reason=Topic |
| 2 | **resist** | present | books *= book* | separation |  |  |  | for the reason | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The books exert a magnetic attraction

```conllu
# sent_id = question:physics:7-living-with-friction:e3:o1:1
# text = The books exert a magnetic attraction
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	books	book	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	exert	exert	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	magnetic	magnetic	ADJ	JJ	Degree=Pos	6	amod	_	_
6	attraction	attraction	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **exert** | infinitive | the books | a magnetic attraction |  |  |  |  | vn use-105.1 «NP V NP»: agent=Agent attraction=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
The pages are united by an adhesive

```conllu
# sent_id = question:physics:7-living-with-friction:e3:o2:1
# text = The pages are united by an adhesive
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	pages	page	NOUN	NNS	Number=Plur	4	nsubj:pass	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	united	unite	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	by	by	ADP	IN	_	7	case	_	_
6	an	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	adhesive	adhesive	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **unite** | present · passive | a adhesive | the pages |  |  |  |  | vn amalgamate-22.2-2-1 «NP V NP»: agent=Agent subject=Patient |

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

<!-- .ven lang=en -->
The friction of numerous pages is cumulatively very great

```conllu
# sent_id = question:physics:7-living-with-friction:e3:o3:1
# text = The friction of numerous pages is cumulatively very great
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	friction	friction	NOUN	NN	Number=Sing	9	nsubj	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	numerous	numerous	ADJ	JJ	Degree=Pos	5	amod	_	_
5	pages	page	NOUN	NNS	Number=Plur	2	nmod	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
7	cumulatively	cumulatively	ADV	RB	_	9	advmod	_	_
8	very	very	ADV	RB	_	9	advmod	_	_
9	great	great	ADJ	JJ	Degree=Pos	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the friction of numerous pages |  |  |  |  | cumulatively, great *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
The air between the pages is removed entirely

```conllu
# sent_id = question:physics:7-living-with-friction:e3:o4:1
# text = The air between the pages is removed entirely
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	air	air	NOUN	NN	Number=Sing	7	nsubj:pass	_	_
3	between	between	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	pages	page	NOUN	NNS	Number=Plur	2	nmod	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	aux:pass	_	_
7	removed	remove	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
8	entirely	entirely	ADV	RB	_	7	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **remove** | present · passive |  | the air between the pages |  |  |  | entirely *property* | vn fire-10.10 «NP V NP»: subject=Theme |

<!-- div src -->

**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.

<!-- /div -->

<!-- pn -->
- ← previous: [Living with friction: oil, wheels and…, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/e2/)
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