---
title: In a tug of war where nobody moves, both teams pull just as hard in… — Pushes and pulls: what makes things move and stop · tree and pragmatics
description: In a tug of war where nobody moves, both teams pull just as hard in opposite directions, so the forces cancel. Who acts: nobody, teams, forces. A sentence of the lesson «Pushes and pulls: what makes things move and stop» of the physics course of Mova's primary school with its dependency tree and the
---

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# Pushes and pulls: what makes things move and stop, sentence 9

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In a tug of war where nobody moves, both teams pull just as hard in opposite directions, so the forces cancel.

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**Who acts:** nobody, teams, forces · **What happens:** move, pull, cancel, tug · **To what, where:** tug, war

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This is a sentence of the lesson «Pushes and pulls: what makes things move and stop» 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 (nobody, teams, forces), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:004-pushes-and-pulls-move-and-stop.lesson:9
# text = In a tug of war where nobody moves, both teams pull just as hard in opposite directions, so the forces cancel.
# source = school lesson (ours)
# course = physics
# lesson = 004-pushes-and-pulls-move-and-stop.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 ×2
1	In	in	ADP	IN	_	3	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
3	tug	tug	NOUN	NN	Number=Sing	12	obl	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	war	war	NOUN	NN	Number=Sing	3	nmod	_	_
6	where	where	ADV	WRB	PronType=Rel	8	advmod	_	_
7	nobody	nobody	PRON	NN	Number=Sing|PronType=Neg	8	nsubj	_	_
8	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	Agree=R5-strong|Haiku=5:acl:relcl
9	,	,	PUNCT	,	_	12	punct	_	_
10	both	both	DET	DT	PronType=Tot	11	det	_	_
11	teams	team	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	pull	pull	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
13	just	just	ADV	RB	_	15	advmod	_	_
14	as	as	ADV	RB	_	15	advmod	_	_
15	hard	hard	ADV	RB	Degree=Pos	12	advmod	_	_
16	in	in	ADP	IN	_	18	case	_	_
17	opposite	opposite	ADJ	JJ	Degree=Pos	18	amod	_	_
18	directions	direction	NOUN	NNS	Number=Plur	12	obl	_	_
19	,	,	PUNCT	,	_	12	punct	_	_
20	so	so	ADV	RB	_	23	advmod	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	Agree=R5-strong|Haiku=23:det
22	forces	force	NOUN	NNS	Number=Plur	23	nsubj	_	_
23	cancel	cancel	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	12	parataxis	_	_
24	.	.	PUNCT	.	_	12	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 | **move** | present | nobody |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 2 | **pull** | present | both teams |  |  | a tug of war |  | in opposite directions; hard *property* | vn slide-11.2 «NP V»: agent=Theme |
| 3 | **cancel** | present | the forces |  |  |  |  |  | tree rules |
| 4 | **tug** |  |  | war |  |  |  |  | nom tug «act transitive»: of=patient |

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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:004-pushes-and-pulls-move-and-stop.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): R5-strong ×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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