---
title: Walking sharks can survive for hours with very little oxygen when a… — Sharks by kind, small and strange: walking shark… · tree and pragmatics
description: Walking sharks can survive for hours with very little oxygen when a rock pool gets warm and stale at low tide. Who acts: Walking sharks, rock pool. A sentence of the lesson «Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks» of the biology course of Mova'
---

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# Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks, sentence 7

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Walking sharks can survive for hours with very little oxygen when a rock pool gets warm and stale at low tide.

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**Who acts:** Walking sharks, rock pool · **What happens:** survive, get · **To what, where:** low tide

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This is a sentence of the lesson «Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks» of the biology 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 (Walking sharks, rock pool), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks.lesson:7
# text = Walking sharks can survive for hours with very little oxygen when a rock pool gets warm and stale at low tide.
# source = school lesson (ours)
# course = biology
# lesson = 311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks.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): R7-rel-agree ×1
1	Walking	walking	NOUN	NN	Number=Sing	2	compound	_	Agree=R7-rel-agree|Haiku=2:amod|HaikuPos=VERB:VBG:Tense=Pres|VerbForm=Part
2	sharks	shark	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	survive	survive	VERB	VB	VerbForm=Inf	0	root	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	hours	hour	NOUN	NNS	Number=Plur	4	obl	_	_
7	with	with	ADP	IN	_	10	case	_	_
8	very	very	ADV	RB	_	9	advmod	_	_
9	little	little	ADJ	JJ	Degree=Pos	10	amod	_	_
10	oxygen	oxygen	NOUN	NN	Number=Sing	4	obl	_	_
11	when	when	SCONJ	WRB	_	15	mark	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
13	rock	rock	NOUN	NN	Number=Sing	14	compound	_	_
14	pool	pool	NOUN	NN	Number=Sing	15	nsubj	_	_
15	gets	get	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	_
16	warm	warm	ADJ	JJ	Degree=Pos	15	xcomp	_	_
17	and	and	CCONJ	CC	_	18	cc	_	_
18	stale	stale	ADJ	JJ	Degree=Pos	16	conj	_	_
19	at	at	ADP	IN	_	21	case	_	_
20	low	low	ADJ	JJ	Degree=Pos	21	amod	_	_
21	tide	tide	NOUN	NN	Number=Sing	15	obl	_	_
22	.	.	PUNCT	.	_	4	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 | **survive** | can | Walking sharks |  |  |  | hour | with little oxygen | vn exist-47.1-1 «NP V»: agent=Theme |
| 2 | **get** | present | a rock pool |  |  | low tide |  | warm *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

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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:biology:311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks.lesson:7`.

**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): 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/).

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