---
title: After one push a swing goes back and forth lower and lower until it… — Swings and pendulums · tree and pragmatics
description: After one push a swing goes back and forth lower and lower until it stops, because air and the creaking chains take away its energy. Who acts: swing, air. A sentence of the lesson «Swings and pendulums» of the physics course of Mova's primary school with its dependency tree and the pragmatics of eve
---

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# Swings and pendulums, sentence 4

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After one push a swing goes back and forth lower and lower until it stops, because air and the creaking chains take away its energy.

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**Who acts:** swing, air · **What happens:** go back, stop, creak, take away · **To what, where:** energy

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This is a sentence of the lesson «Swings and pendulums» 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 (swing, air), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:010-swings-and-pendulums.lesson:4
# text = After one push a swing goes back and forth lower and lower until it stops, because air and the creaking chains take away its energy.
# source = school lesson (ours)
# course = physics
# lesson = 010-swings-and-pendulums.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): R1-cc-next ×1, R5-strong ×2
1	After	after	ADP	IN	_	3	case	_	_
2	one	one	NUM	CD	NumForm=Word|NumType=Card	3	nummod	_	_
3	push	push	NOUN	NN	Number=Sing	6	obl	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	swing	swing	NOUN	NN	Number=Sing	6	nsubj	_	_
6	goes	go	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	back	back	ADV	RB	_	6	advmod	_	Agree=R5-strong|Haiku=10:advmod
8	and	and	CCONJ	CC	_	10	cc	_	_
9	forth	forth	ADV	RB	_	7	conj	_	Agree=R5-strong|Haiku=10:advmod
10	lower	low	ADV	RBR	Degree=Cmp	6	advmod	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	lower	low	ADV	RBR	Degree=Cmp	10	conj	_	_
13	until	until	SCONJ	IN	_	15	mark	_	_
14	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	15	nsubj	_	_
15	stops	stop	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	advcl	_	_
16	,	,	PUNCT	,	_	15	punct	_	_
17	because	because	SCONJ	IN	_	23	mark	_	_
18	air	air	NOUN	NN	Number=Sing	23	nsubj	_	_
19	and	and	CCONJ	CC	_	22	cc	_	Agree=R1-cc-next|Haiku=18:cc
20	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
21	creaking	creak	VERB	VBG	VerbForm=Ger	22	amod	_	_
22	chains	chain	NOUN	NNS	Number=Plur	18	conj	_	_
23	take	take	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	15	advcl	_	_
24	away	away	ADV	RP	_	23	compound:prt	_	_
25	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	26	nmod:poss	_	_
26	energy	energy	NOUN	NN	Number=Sing	23	obj	_	_
27	.	.	PUNCT	.	_	6	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 | **go back** | present | a swing |  |  |  | after one push | low *property* | vn convert-26.6.2 «NP V S\_ING»: agent=Patient |
| 2 | **stop** | present | swing |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |
| 3 | **creak** | gerund |  |  |  |  |  |  | vn sound\_emission-43.2 «NP V»: agent=Theme |
| 4 | **take away** | present | air and the creaking chains | swing's energy |  |  |  |  | vn remove-10.1 «NP V NP»: agent=Agent energy=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:010-swings-and-pendulums.lesson:4`.

**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): R1-cc-next ×1, 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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