---
title: Air always moves from where it is squashed and presses harder to whe… — Pressure tricks: pumps, tyres and vacuums · tree and pragmatics
description: Air always moves from where it is squashed and presses harder to where it presses less, and many machines in your home are clever ways of using that one rule. Who acts: Air, many machines, clever ways. A sentence of the lesson «Pressure tricks: pumps, tyres and vacuums» of the physics course of Mova
---

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# Pressure tricks: pumps, tyres and vacuums, sentence 0

<!-- .ven lang=en -->
Air always moves from where it is squashed and presses harder to where it presses less, and many machines in your home are clever ways of using that one rule.

<!-- .vintro -->
**Who acts:** Air, many machines, clever ways · **What happens:** move, squash, press, be, use · **To what, where:** Air, clever ways, one rule

<!-- .vabout -->
This is a sentence of the lesson «Pressure tricks: pumps, tyres and vacuums» 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 (Air, many machines, clever ways), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:016-pressure-tricks-pumps-tyres-vacuums.lesson:0
# text = Air always moves from where it is squashed and presses harder to where it presses less, and many machines in your home are clever ways of using that one rule.
# source = school lesson (ours)
# course = physics
# lesson = 016-pressure-tricks-pumps-tyres-vacuums.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	Air	air	NOUN	NN	Number=Sing	3	nsubj	_	_
2	always	always	ADV	RB	_	3	advmod	_	_
3	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	from	from	SCONJ	IN	_	8	mark	_	_
5	where	where	ADV	WRB	PronType=Rel	8	advmod	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj:pass	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	aux:pass	_	_
8	squashed	squash	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	presses	press	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	harder	hard	ADV	RBR	Degree=Cmp	10	advmod	_	_
12	to	to	SCONJ	IN	_	15	mark	_	_
13	where	where	ADV	WRB	PronType=Rel	15	advmod	_	_
14	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	15	nsubj	_	_
15	presses	press	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	conj	_	_
16	less	less	ADV	RBR	Degree=Cmp	15	advmod	_	_
17	,	,	PUNCT	,	_	26	punct	_	_
18	and	and	CCONJ	CC	_	26	cc	_	_
19	many	many	ADJ	JJ	Degree=Pos	20	amod	_	_
20	machines	machine	NOUN	NNS	Number=Plur	26	nsubj	_	_
21	in	in	ADP	IN	_	23	case	_	_
22	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	23	nmod:poss	_	_
23	home	home	NOUN	NN	Number=Sing	20	nmod	_	_
24	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	26	cop	_	_
25	clever	clever	ADJ	JJ	Degree=Pos	26	amod	_	_
26	ways	way	NOUN	NNS	Number=Plur	3	conj	_	_
27	of	of	SCONJ	IN	_	28	mark	_	_
28	using	use	VERB	VBG	VerbForm=Ger	26	acl	_	_
29	that	that	DET	DT	PronType=Dem	31	det	_	_
30	one	one	NUM	CD	NumForm=Word|NumType=Card	31	nummod	_	_
31	rule	rule	NOUN	NN	Number=Sing	28	obj	_	_
32	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: pos
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move** | present | Air |  |  |  |  | always *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 2 | **squash** | present · passive |  | Air |  |  |  |  | vn carve-21.2-1 «NP V NP»: subject=Patient |
| 3 | **press** | present | Air *not said here* |  |  |  |  | hard *property* | vn push-12-1-1 «NP V PP»: agent=Agent |
| 4 | **press** | present | Air |  |  |  |  | less *property* | vn push-12-1-1 «NP V PP»: agent=Agent |
| 5 | **is a** | present | many machines in your home | clever ways |  |  |  |  | tree rules |
| 6 | **use** | gerund | clever ways *not said here* | that one rule |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent rule=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:016-pressure-tricks-pumps-tyres-vacuums.lesson:0`.

**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/).

<!-- /div -->

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- ← previous: [Wind and weather, 17](https://md.mova.elamur.ai/free/en/corpora/school/physics/15-wind-and-weather/17/)
- next →: [Pressure tricks: pumps, tyres and vacu…, 1](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/1/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/)

