---
title: Which of the following statements most accurately characterises the… — Living with friction: oil, wheels and… · tree and pragmatics
description: Which of the following statements most accurately characterises the function of lubricating oil in a hinge? Exam question 1 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 opt
---

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# Exam question 1 · Living with friction: oil, wheels and grip

<!-- .ven lang=en -->
Which of the following statements most accurately characterises the function of lubricating oil in a hinge?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** function · **What happens:** follow, characteris, lubricate · **To what, where:** function, oil, hinge

<!-- .vabout -->
This is exam question 1 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/#e1).

## The question {#question}

```conllu
# sent_id = question:physics:7-living-with-friction:e1:1
# text = Which of the following statements most accurately characterises the function of lubricating oil in a hinge?
1	Which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
2	of	of	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	statements	statement	NOUN	NNS	Number=Plur	8	obl	_	_
6	most	most	ADV	RBS	Degree=Sup	7	advmod	_	_
7	accurately	accurately	ADV	RB	_	8	advmod	_	_
8	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	function	function	NOUN	NN	Number=Sing	8	obj	_	_
11	of	of	SCONJ	IN	_	12	mark	_	_
12	lubricating	lubricate	VERB	VBG	VerbForm=Ger	10	acl	_	_
13	oil	oil	NOUN	NN	Number=Sing	12	obj	_	_
14	in	in	ADP	IN	_	16	case	_	_
15	a	a	DET	DT	Definite=Ind|PronType=Art	16	det	_	_
16	hinge	hinge	NOUN	NN	Number=Sing	12	obl	_	SpaceAfter=No
17	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | the function |  |  |  | of the following statements; accurately *property* | tree rules |
| 3 | **lubricate** | gerund | the function *not said here* | oil |  | a hinge |  |  | vn butter-9.9 «NP V NP.destination»: agent=Agent oil=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 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
It interposes a slippery layer between the metal surfaces

```conllu
# sent_id = question:physics:7-living-with-friction:e1:o1:1
# text = It interposes a slippery layer between the metal surfaces
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	interposes	interpose	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	slippery	slippery	ADJ	JJ	Degree=Pos	5	amod	_	_
5	layer	layer	NOUN	NN	Number=Sing	2	obj	_	_
6	between	between	ADP	IN	_	9	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
8	metal	metal	NOUN	NN	Number=Sing	9	compound	_	_
9	surfaces	surface	NOUN	NNS	Number=Plur	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **interpose** *speech: other* | present | It | a slippery layer |  |  |  | between the metal surfaces | vn say-37.7-1-1 «NP V NP.topic»: agent=Agent layer=Topic |

### Option 2 {#o2}

<!-- .ven lang=en -->
It increases the mass of the moving parts

```conllu
# sent_id = question:physics:7-living-with-friction:e1:o2:1
# text = It increases the mass of the moving parts
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	increases	increase	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	mass	mass	NOUN	NN	Number=Sing	2	obj	_	_
5	of	of	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	moving	move	VERB	VBG	VerbForm=Ger	8	amod	_	_
8	parts	part	NOUN	NNS	Number=Plur	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **increase** | present | It | the mass of the moving parts |  |  |  |  | vn caused\_calibratable\_cos-45.6.2-1 «NP V NP.patient»: agent=Causer mass=Patient |
| 2 | **move** | gerund |  |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
It attracts the parts towards one another

```conllu
# sent_id = question:physics:7-living-with-friction:e1:o3:1
# text = It attracts the parts towards one another
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	attracts	attract	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	parts	part	NOUN	NNS	Number=Plur	2	obj	_	_
5	towards	towards	ADP	IN	_	6	case	_	_
6	one	one	NUM	CD	NumForm=Word|NumType=Card	2	obl	_	_
7	another	another	DET	DT	PronType=Ind	6	fixed	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **attract** | present | It | the parts |  |  |  | towards one | vn lure-59.3 «NP V NP»: agent=Agent part=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
It renders the metal soft and pliable

```conllu
# sent_id = question:physics:7-living-with-friction:e1:o4:1
# text = It renders the metal soft and pliable
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	renders	render	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	metal	metal	NOUN	NN	Number=Sing	2	obj	_	_
5	soft	soft	ADJ	JJ	Degree=Pos	2	xcomp	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	pliable	pliable	ADJ	JJ	Degree=Pos	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **render** | present | It | the metal |  |  |  | soft *property* | vn give-13.1 «NP V NP»: agent=Agent metal=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.

<!-- /div -->

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- ← previous: [Living with friction: oil, wheels and…, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t10/)
- next →: [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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