---
title: On long mountain roads car brakes can get so hot that they stop work… — Friction: the grip that stops and helps · tree and pragmatics
description: On long mountain roads car brakes can get so hot that they stop working well, so drivers use low gears. Who acts: car brakes, brakes, drivers. A sentence of the lesson «Friction: the grip that stops and helps» of the physics course of Mova's primary school with its dependency tree and the pragmatics
---

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# Friction: the grip that stops and helps, sentence 12

<!-- .ven lang=en -->
On long mountain roads car brakes can get so hot that they stop working well, so drivers use low gears.

<!-- .vintro -->
**Who acts:** car brakes, brakes, drivers · **What happens:** get, stop, work, use · **To what, where:** long mountain roads, low gears

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This is a sentence of the lesson «Friction: the grip that stops and helps» 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 (car brakes, brakes, drivers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:006-friction-the-grip.lesson:12
# text = On long mountain roads car brakes can get so hot that they stop working well, so drivers use low gears.
# source = school lesson (ours)
# course = physics
# lesson = 006-friction-the-grip.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): R5-strong ×1
1	On	on	ADP	IN	_	4	case	_	_
2	long	long	ADJ	JJ	Degree=Pos	4	amod	_	Agree=R5-strong|Haiku=3:amod
3	mountain	mountain	NOUN	NN	Number=Sing	4	compound	_	_
4	roads	road	NOUN	NNS	Number=Plur	8	obl	_	_
5	car	car	NOUN	NN	Number=Sing	6	compound	_	_
6	brakes	brake	NOUN	NNS	Number=Plur	8	nsubj	_	_
7	can	can	AUX	MD	VerbForm=Fin	8	aux	_	_
8	get	get	VERB	VB	VerbForm=Inf	0	root	_	_
9	so	so	ADV	RB	_	10	advmod	_	_
10	hot	hot	ADJ	JJ	Degree=Pos	8	xcomp	_	_
11	that	that	SCONJ	IN	_	13	mark	_	_
12	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	13	nsubj	_	_
13	stop	stop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	advcl	_	_
14	working	work	VERB	VBG	VerbForm=Ger	13	xcomp	_	_
15	well	well	ADV	RB	_	14	advmod	_	_
16	,	,	PUNCT	,	_	19	punct	_	_
17	so	so	ADV	RB	_	19	advmod	_	_
18	drivers	driver	NOUN	NNS	Number=Plur	19	nsubj	_	_
19	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	conj	_	_
20	low	low	ADJ	JJ	Degree=Pos	21	amod	_	_
21	gears	gear	NOUN	NNS	Number=Plur	19	obj	_	_
22	.	.	PUNCT	.	_	8	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | can | car brakes |  |  | long mountain roads |  | hot *property* | vn get-13.5.1-1 «NP V NP PP.source»: agent=Agent on road=Source |
| 2 | **stop** | present | brakes *= brake* |  |  |  |  |  | vn stop-55.4-1-1 «NP V S\_ING»: agent=Affector clause=Eventuality |
| 3 | **work** | gerund | brakes *= brake* *not said here* |  |  |  |  | well *property* | vn employment-95.3 «NP V»: agent=Agent |
| 4 | **use** | present | drivers | low gears |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent gear=Patient |

<!-- .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:006-friction-the-grip.lesson:12`.

**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): R5-strong ×1. **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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