---
title: Racing cars are built low and wide so they do not tip over in fast c… — Balance: the centre of gravity · tree and pragmatics
description: Racing cars are built low and wide so they do not tip over in fast corners. Who acts: cars. A sentence of the lesson «Balance: the centre of gravity» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Balance: the centre of gravity, sentence 9

<!-- .ven lang=en -->
Racing cars are built low and wide so they do not tip over in fast corners.

<!-- .vintro -->
**Who acts:** cars · **What happens:** build, not tip over · **To what, where:** Racing cars, fast corners

<!-- .vabout -->
This is a sentence of the lesson «Balance: the centre of gravity» 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 (cars), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:008-balance-the-centre-of-gravity.lesson:9
# text = Racing cars are built low and wide so they do not tip over in fast corners.
# source = school lesson (ours)
# course = physics
# lesson = 008-balance-the-centre-of-gravity.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): R7-rel-agree ×2
1	Racing	racing	NOUN	NN	Number=Sing	2	compound	_	Agree=R7-rel-agree|Haiku=2:amod|HaikuPos=VERB:VBG:VerbForm=Ger
2	cars	car	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	built	build	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	low	low	ADJ	JJ	Degree=Pos	4	xcomp	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	wide	wide	ADJ	JJ	Degree=Pos	5	conj	_	_
8	so	so	ADV	RB	_	12	advmod	_	Agree=R7-rel-agree|Haiku=12:mark|HaikuPos=SCONJ:IN:_
9	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	12	nsubj	_	_
10	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	12	aux	_	_
11	not	not	PART	RB	Polarity=Neg	12	advmod	_	_
12	tip	tip	VERB	VB	VerbForm=Inf	4	advcl	_	_
13	over	over	ADP	RP	_	12	compound:prt	_	_
14	in	in	ADP	IN	_	16	case	_	_
15	fast	fast	ADJ	JJ	Degree=Pos	16	amod	_	_
16	corners	corner	NOUN	NNS	Number=Plur	12	obl	_	_
17	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **build** | present · passive |  | Racing cars |  |  |  | low *property* | vn build-26.1-1 «NP.asset V NP»: subject=Product |
| 2 | **not** **tip over** | present · do-support | cars *= car* |  |  | fast corners |  |  | vn throw-17.1-1-1 «NP V NP PP.destinations»: agent=Agent in corner=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.

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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:008-balance-the-centre-of-gravity.lesson:9`.

**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): R7-rel-agree ×2. **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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