---
title: A shark has no swim bladder, so it keeps swimming to stay up, and it… — Fish, frogs and reptiles · tree and pragmatics
description: A shark has no swim bladder, so it keeps swimming to stay up, and its light, bendy skeleton helps it. Who acts: shark, light bendy skeleton. A sentence of the lesson «Fish, frogs and reptiles» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/74-fish-frogs-reptiles/13/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / [Fish, frogs and reptiles](https://md.mova.elamur.ai/free/en/corpora/school/world/74-fish-frogs-reptiles/) / 13

# Fish, frogs and reptiles, sentence 13

<!-- .ven lang=en -->
A shark has no swim bladder, so it keeps swimming to stay up, and its light, bendy skeleton helps it.

<!-- .vintro -->
**Who acts:** shark, light bendy skeleton · **What happens:** have, keep, swim, stay up, help · **To what, where:** swim bladder, shark

<!-- .vabout -->
This is a sentence of the lesson «Fish, frogs and reptiles» 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 (shark, light bendy skeleton), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:074-fish-frogs-reptiles.lesson:13
# text = A shark has no swim bladder, so it keeps swimming to stay up, and its light, bendy skeleton helps it.
# source = school lesson (ours)
# course = world
# lesson = 074-fish-frogs-reptiles.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 ×3, R7-rel-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	shark	shark	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	no	no	DET	DT	PronType=Neg	6	det	_	_
5	swim	swim	NOUN	NN	Number=Sing	6	compound	_	_
6	bladder	bladder	NOUN	NN	Number=Sing	3	obj	_	_
7	,	,	PUNCT	,	_	10	punct	_	_
8	so	so	ADV	RB	_	10	advmod	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	10	nsubj	_	_
10	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	swimming	swim	VERB	VBG	VerbForm=Ger	10	xcomp	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	stay	stay	VERB	VB	VerbForm=Inf	11	advcl	_	Agree=R7-rel-agree|Haiku=11:xcomp
14	up	up	ADP	RP	_	13	compound:prt	_	_
15	,	,	PUNCT	,	_	22	punct	_	_
16	and	and	CCONJ	CC	_	22	cc	_	_
17	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	21	nmod:poss	_	Agree=R5-strong|Haiku=18:nmod:poss
18	light	light	ADJ	JJ	Degree=Pos	21	amod	_	Agree=R5-strong|Haiku=22:nsubj|HaikuPos=NOUN:NN:Number=Sing
19	,	,	PUNCT	,	_	21	punct	_	_
20	bendy	bendy	ADJ	JJ	Degree=Pos	21	amod	_	_
21	skeleton	skeleton	NOUN	NN	Number=Sing	22	nsubj	_	Agree=R5-strong|Haiku=18:conj
22	helps	help	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
23	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	22	obj	_	_
24	.	.	PUNCT	.	_	3	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 | **have** | present | a shark | no swim bladder |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent bladder=Patient |
| 2 | **keep** | present | shark |  |  |  |  |  | tree rules |
| 3 | **swim** | gerund | shark *not said here* |  |  |  |  |  | vn run-51.3.2-1 «NP V»: agent=Theme |
| 4 | **stay up** | to-infinitive | shark *not said here* |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 5 | **help** | present | shark's light bendy skeleton | shark |  |  |  |  | vn help-72.1-1-1 «NP V NP»: agent=Agent it=Beneficiary |

<!-- .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.

<!-- div src -->

**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:074-fish-frogs-reptiles.lesson:13`.

**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 ×3, 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/).

<!-- /div -->

<!-- pn -->
- ← previous: [Fish, frogs and reptiles, 12](https://md.mova.elamur.ai/free/en/corpora/school/world/74-fish-frogs-reptiles/12/)
- next →: [Fish, frogs and reptiles, 14](https://md.mova.elamur.ai/free/en/corpora/school/world/74-fish-frogs-reptiles/14/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/74-fish-frogs-reptiles/)

