---
title: Many fish have a swim bladder, a bag of gas that helps them float at… — Floating and sinking: the push of water · tree and pragmatics
description: Many fish have a swim bladder, a bag of gas that helps them float at the depth they want. Who acts: Many fish, gas, fish. A sentence of the lesson «Floating and sinking: the push of water» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Floating and sinking: the push of water, sentence 20

<!-- .ven lang=en -->
Many fish have a swim bladder, a bag of gas that helps them float at the depth they want.

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**Who acts:** Many fish, gas, fish · **What happens:** have, help, float, want · **To what, where:** swim bladder, fish, depth

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This is a sentence of the lesson «Floating and sinking: the push of water» of the world 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 (Many fish, gas, fish), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:083-floating-and-sinking.lesson:20
# text = Many fish have a swim bladder, a bag of gas that helps them float at the depth they want.
# source = school lesson (ours)
# course = world
# lesson = 083-floating-and-sinking.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	Many	many	ADJ	JJ	Degree=Pos	2	amod	_	_
2	fish	fish	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	swim	swim	NOUN	NN	Number=Sing	6	compound	_	_
6	bladder	bladder	NOUN	NN	Number=Sing	3	obj	_	_
7	,	,	PUNCT	,	_	9	punct	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	bag	bag	NOUN	NN	Number=Sing	6	appos	_	_
10	of	of	ADP	IN	_	11	case	_	_
11	gas	gas	NOUN	NN	Number=Sing	9	nmod	_	_
12	that	that	PRON	WDT	PronType=Rel	13	nsubj	_	_
13	helps	help	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	acl:relcl	_	_
14	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	13	obj	_	_
15	float	float	VERB	VB	VerbForm=Inf	13	xcomp	_	_
16	at	at	ADP	IN	_	18	case	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	depth	depth	NOUN	NN	Number=Sing	15	obl	_	_
19	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	20	nsubj	_	_
20	want	want	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	18	acl:relcl	_	_
21	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- 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 | **have** | present | Many fish | a swim bladder |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent bladder=Patient |
| 2 | **help** | present | gas | fish |  |  |  |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent they=Beneficiary clause=Theme |
| 3 | **float** | infinitive | fish *not said here* |  |  | the depth |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme at depth=Trajectory |
| 4 | **want** | present | fish | the depth *not said here* |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot depth=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:world:083-floating-and-sinking.lesson:20`.

**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/).

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- ← previous: [Floating and sinking: the push of water, 19](https://md.mova.elamur.ai/free/en/corpora/school/world/83-floating-and-sinking/19/)
- next →: [Floating and sinking: the push of water, 21](https://md.mova.elamur.ai/free/en/corpora/school/world/83-floating-and-sinking/21/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/83-floating-and-sinking/)