---
title: Oil on a squeaky hinge makes a slippery layer between the metal part… — Living with friction: oil, wheels and grip · tree and pragmatics
description: Oil on a squeaky hinge makes a slippery layer between the metal parts, so they slide instead of rubbing. Who acts: Oil, parts. A sentence of the lesson «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every cla
---

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# Living with friction: oil, wheels and grip, sentence 4

<!-- .ven lang=en -->
Oil on a squeaky hinge makes a slippery layer between the metal parts, so they slide instead of rubbing.

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**Who acts:** Oil, parts · **What happens:** make, slide, rub · **To what, where:** slippery layer

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This is a sentence of the lesson «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Oil, parts), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:007-living-with-friction.lesson:4
# text = Oil on a squeaky hinge makes a slippery layer between the metal parts, so they slide instead of rubbing.
# source = school lesson (ours)
# course = physics
# lesson = 007-living-with-friction.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	Oil	oil	NOUN	NN	Number=Sing	6	nsubj	_	_
2	on	on	ADP	IN	_	5	case	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	squeaky	squeaky	ADJ	JJ	Degree=Pos	5	amod	_	_
5	hinge	hinge	NOUN	NN	Number=Sing	1	nmod	_	_
6	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
8	slippery	slippery	ADJ	JJ	Degree=Pos	9	amod	_	_
9	layer	layer	NOUN	NN	Number=Sing	6	obj	_	_
10	between	between	ADP	IN	_	13	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	metal	metal	NOUN	NN	Number=Sing	13	compound	_	_
13	parts	part	NOUN	NNS	Number=Plur	9	nmod	_	_
14	,	,	PUNCT	,	_	17	punct	_	_
15	so	so	ADV	RB	_	17	advmod	_	_
16	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	17	nsubj	_	_
17	slide	slide	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
18	instead	instead	ADV	RB	ExtPos=SCONJ	20	mark	_	_
19	of	of	ADP	IN	_	18	fixed	_	_
20	rubbing	rub	VERB	VBG	Tense=Pres|VerbForm=Part	17	advcl	_	_
21	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Oil on a squeaky hinge | a slippery layer |  |  |  | between the metal parts | vn build-26.1-1 «NP.material V NP»: agent=Material layer=Product |
| 2 | **slide** | present | parts *= part* |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 3 | **rub** | gerund | parts *= part* *not said here* |  |  |  |  |  | vn spray-9.7-1 «NP V PP.destination»: agent=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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:physics:007-living-with-friction.lesson:4`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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- ← previous: [Living with friction: oil, wheels and…, 2](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/2/)
- next →: [Living with friction: oil, wheels and…, 5](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/5/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/)