---
title: In a braking car a helium balloon on a string leans backwards, becau… — Rockets, record speeds and motion everywhere · tree and pragmatics
description: In a braking car a helium balloon on a string leans backwards, because the heavier air sloshes forward and pushes the light balloon away, as water pushes a cork up. Who acts: helium balloon, heavier air, water. A sentence of the lesson «Rockets, record speeds and motion everywhere» of the physics co
---

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# Rockets, record speeds and motion everywhere, sentence 15

<!-- .ven lang=en -->
In a braking car a helium balloon on a string leans backwards, because the heavier air sloshes forward and pushes the light balloon away, as water pushes a cork up.

<!-- .vintro -->
**Who acts:** helium balloon, heavier air, water · **What happens:** brake, lean, slosh, push, push up · **To what, where:** braking car, light balloon, cork

<!-- .vabout -->
This is a sentence of the lesson «Rockets, record speeds and motion everywhere» 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 (helium balloon, heavier air, water), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:038-rockets-record-speeds-and-motion-everywhere.lesson:15
# text = In a braking car a helium balloon on a string leans backwards, because the heavier air sloshes forward and pushes the light balloon away, as water pushes a cork up.
# source = school lesson (ours)
# course = physics
# lesson = 038-rockets-record-speeds-and-motion-everywhere.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, R7-rel-agree ×1
1	In	in	ADP	IN	_	4	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	braking	brake	VERB	VBG	VerbForm=Ger	4	compound	_	Agree=R7-rel-agree|Haiku=4:amod
4	car	car	NOUN	NN	Number=Sing	11	obl	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	helium	helium	NOUN	NN	Number=Sing	7	compound	_	_
7	balloon	balloon	NOUN	NN	Number=Sing	11	nsubj	_	_
8	on	on	ADP	IN	_	10	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	string	string	NOUN	NN	Number=Sing	7	nmod	_	_
11	leans	lean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
12	backwards	backward	ADV	RB	_	11	advmod	_	_
13	,	,	PUNCT	,	_	11	punct	_	_
14	because	because	SCONJ	IN	_	18	mark	_	_
15	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	Agree=R5-strong|Haiku=18:det
16	heavier	heavy	ADJ	JJR	Degree=Cmp	17	amod	_	_
17	air	air	NOUN	NN	Number=Sing	18	nsubj	_	_
18	sloshes	slosh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	advcl	_	_
19	forward	forward	ADV	RB	_	18	advmod	_	_
20	and	and	CCONJ	CC	_	21	cc	_	_
21	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	conj	_	_
22	the	the	DET	DT	Definite=Def|PronType=Art	24	det	_	_
23	light	light	NOUN	NN	Number=Sing	24	compound	_	_
24	balloon	balloon	NOUN	NN	Number=Sing	21	obj	_	_
25	away	away	ADV	RB	_	21	advmod	_	_
26	,	,	PUNCT	,	_	11	punct	_	_
27	as	as	SCONJ	IN	_	29	mark	_	_
28	water	water	NOUN	NN	Number=Sing	29	nsubj	_	_
29	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	advcl	_	_
30	a	a	DET	DT	Definite=Ind|PronType=Art	31	det	_	_
31	cork	cork	NOUN	NN	Number=Sing	29	obj	_	_
32	up	up	ADP	RP	_	29	compound:prt	_	_
33	.	.	PUNCT	.	_	11	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 | **brake** | gerund |  |  |  |  |  |  | tree rules |
| 2 | **lean** | present | a helium balloon on a string |  |  | a braking car |  | backward *property* | vn assuming\_position-50 «NP V PP.location»: agent=Agent in car=Location |
| 3 | **slosh** | present | the heavier air |  |  |  |  | forward *property* | vn pour-9.5 «NP V PP.destination»: agent=Theme |
| 4 | **push** | present | the heavier air *not said here* | the light balloon |  |  |  | away *property* | vn carry-11.4-1-1 «NP V NP»: agent=Agent balloon=Theme |
| 5 | **push up** | present | water | a cork |  |  |  |  | vn carry-11.4-1-1 «NP V NP»: agent=Agent cork=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:038-rockets-record-speeds-and-motion-everywhere.lesson:15`.

**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, R7-rel-agree ×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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