---
title: Dolphins rest one half of their brain at a time, keeping the other h… — Animal minds: dolphins' names, orca grandmothers… · tree and pragmatics
description: Dolphins rest one half of their brain at a time, keeping the other half awake to breathe and watch out, because a dolphin must choose to come up and breathe or it would drown, with the eye on the awake side open. Who acts: Dolphins, dolphin, half. A sentence of the lesson «Animal minds: dolphins' na
---

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# Animal minds: dolphins' names, orca grandmothers and whale songs, sentence 12

<!-- .ven lang=en -->
Dolphins rest one half of their brain at a time, keeping the other half awake to breathe and watch out, because a dolphin must choose to come up and breathe or it would drown, with the eye on the awake side open.

<!-- .vintro -->
**Who acts:** Dolphins, dolphin, half · **What happens:** rest, keep, breathe, watch out, choose, come up · **To what, where:** one half, other half, eye, awake side

<!-- .vabout -->
This is a sentence of the lesson «Animal minds: dolphins' names, orca grandmothers and whale songs» 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 (Dolphins, dolphin, half), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:235-animal-minds-dolphins-names-orca-grandmothers-and-whale-songs.lesson:12
# text = Dolphins rest one half of their brain at a time, keeping the other half awake to breathe and watch out, because a dolphin must choose to come up and breathe or it would drown, with the eye on the awake side open.
# source = school lesson (ours)
# course = biology
# lesson = 235-animal-minds-dolphins-names-orca-grandmothers-and-whale-songs.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 ×2
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	,	_	12	punct	_	_
12	keeping	keep	VERB	VBG	Tense=Pres|VerbForm=Part	2	advcl	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	other	other	ADJ	JJ	Degree=Pos	15	amod	_	_
15	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	12	obj	_	_
16	awake	awake	ADJ	JJ	Degree=Pos	12	xcomp	_	_
17	to	to	PART	TO	_	18	mark	_	_
18	breathe	breathe	VERB	VB	VerbForm=Inf	16	advcl	_	_
19	and	and	CCONJ	CC	_	20	cc	_	_
20	watch	watch	VERB	VB	VerbForm=Inf	18	conj	_	Agree=R7-rel-agree|Haiku=18:xcomp
21	out	out	ADP	RP	_	20	compound:prt	_	_
22	,	,	PUNCT	,	_	27	punct	_	_
23	because	because	SCONJ	IN	_	27	mark	_	_
24	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	_	_
25	dolphin	dolphin	NOUN	NN	Number=Sing	27	nsubj	_	_
26	must	must	AUX	MD	VerbForm=Fin	27	aux	_	_
27	choose	choose	VERB	VB	VerbForm=Inf	2	advcl	_	_
28	to	to	PART	TO	_	29	mark	_	_
29	come	come	VERB	VB	VerbForm=Inf	27	xcomp	_	_
30	up	up	ADV	RB	_	29	advmod	_	_
31	and	and	CCONJ	CC	_	32	cc	_	_
32	breathe	breathe	VERB	VB	VerbForm=Inf	29	conj	_	_
33	or	or	CCONJ	CC	_	36	cc	_	_
34	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	36	nsubj	_	_
35	would	would	AUX	MD	VerbForm=Fin	36	aux	_	_
36	drown	drown	VERB	VB	VerbForm=Inf	27	conj	_	_
37	,	,	PUNCT	,	_	40	punct	_	_
38	with	with	ADP	IN	_	40	case	_	_
39	the	the	DET	DT	Definite=Def|PronType=Art	40	det	_	_
40	eye	eye	NOUN	NN	Number=Sing	36	obj	_	_
41	on	on	ADP	IN	_	44	case	_	_
42	the	the	DET	DT	Definite=Def|PronType=Art	44	det	_	_
43	awake	awake	ADJ	JJ	Degree=Pos	44	amod	_	_
44	side	side	NOUN	NN	Number=Sing	36	obl	_	_
45	open	open	ADJ	JJ	Degree=Pos	36	advcl	_	Agree=R7-rel-agree|Haiku=36:xcomp
46	.	.	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** | gerund | Dolphins *not said here* | the other half |  |  |  | awake *property* | vn keep-15.2 «NP V NP»: agent=Agent half=Theme |
| 3 | **breathe** | to-infinitive | Dolphins *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 4 | **watch out** | infinitive | Dolphins *not said here* |  |  |  |  |  | vn search-35.2 «NP V PP.location»: agent=Agent |
| 5 | **choose** | must | a dolphin |  |  |  |  |  | tree rules |
| 6 | **come up** | to-infinitive | a dolphin *not said here* |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |
| 7 | **breathe** | infinitive | a dolphin *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 8 | **drown** | would | half | the eye |  | the awake side |  |  | vn poison-42.2 «NP V NP»: agent=Agent eye=Patient |

<!-- .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:biology:235-animal-minds-dolphins-names-orca-grandmothers-and-whale-songs.lesson:12`.

**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 ×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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