---
title: Dolphins rest one half of their brain at a time, so they can keep br… — Animals in the sea and the river · tree and pragmatics
description: Dolphins rest one half of their brain at a time, so they can keep breathing and watching. Who acts: Dolphins. A sentence of the lesson «Animals in the sea and the river» of the myths course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Animals in the sea and the river, sentence 15

<!-- .ven lang=en -->
Dolphins rest one half of their brain at a time, so they can keep breathing and watching.

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**Who acts:** Dolphins · **What happens:** rest, keep, breathe, watch · **To what, where:** one half

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This is a sentence of the lesson «Animals in the sea and the river» of the myths 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 (Dolphins), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:myths:011-animals-in-the-sea-and-the-river.lesson:15
# text = Dolphins rest one half of their brain at a time, so they can keep breathing and watching.
# source = school lesson (ours)
# course = myths
# lesson = 011-animals-in-the-sea-and-the-river.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	Dolphins	dolphin	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	rest	rest	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	one	one	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	brain	brain	NOUN	NN	Number=Sing	4	nmod	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	time	time	NOUN	NN	Number=Sing	2	obl	_	_
11	,	,	PUNCT	,	_	15	punct	_	_
12	so	so	ADV	RB	_	15	advmod	_	_
13	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	15	nsubj	_	_
14	can	can	AUX	MD	VerbForm=Fin	15	aux	_	_
15	keep	keep	VERB	VB	VerbForm=Inf	2	conj	_	_
16	breathing	breathe	VERB	VBG	VerbForm=Ger	15	xcomp	_	_
17	and	and	CCONJ	CC	_	18	cc	_	_
18	watching	watch	VERB	VBG	VerbForm=Ger	16	conj	_	_
19	.	.	PUNCT	.	_	2	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 | **rest** | present | Dolphins | one half of Dolphins's brain |  |  | time |  | vn spatial\_configuration-47.6-1 «PP.location V NP»: agent=Location half=Theme |
| 2 | **keep** | can | Dolphins *= dolphin* |  |  |  |  |  | tree rules |
| 3 | **breathe** | gerund | Dolphins *= dolphin* *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 4 | **watch** | gerund | Dolphins *= dolphin* *not said here* |  |  |  |  |  | vn search-35.2 «NP V PP.location»: agent=Agent |

<!-- .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:myths:011-animals-in-the-sea-and-the-river.lesson:15`.

**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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- next →: [Animals in the sea and the river, 16](https://md.mova.elamur.ai/free/en/corpora/school/myths/11-animals-in-the-sea-and-the-river/16/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/myths/11-animals-in-the-sea-and-the-river/)