---
title: A sea star has no brain, can regrow a lost arm, and has a simple eye… — The aquarium: jellyfish, octopuses, sea stars an… · tree and pragmatics
description: A sea star has no brain, can regrow a lost arm, and has a simple eye spot at the tip of each arm that senses light. Who acts: sea star, arm. A sentence of the lesson «The aquarium: jellyfish, octopuses, sea stars and the deep sea» of the biology course of Mova's primary school with its dependency tr
---

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# The aquarium: jellyfish, octopuses, sea stars and the deep sea, sentence 14

<!-- .ven lang=en -->
A sea star has no brain, can regrow a lost arm, and has a simple eye spot at the tip of each arm that senses light.

<!-- .vintro -->
**Who acts:** sea star, arm · **What happens:** have, regrow, lose, sense · **To what, where:** brain, lost arm, simple eye spot, tip, light

<!-- .vabout -->
This is a sentence of the lesson «The aquarium: jellyfish, octopuses, sea stars and the deep sea» 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 (sea star, arm), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:092-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea.lesson:14
# text = A sea star has no brain, can regrow a lost arm, and has a simple eye spot at the tip of each arm that senses light.
# source = school lesson (ours)
# course = biology
# lesson = 092-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea.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): R3-conj-first ×1, R8-pos-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	sea	sea	NOUN	NN	Number=Sing	3	compound	_	_
3	star	star	NOUN	NN	Number=Sing	4	nsubj	_	_
4	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	no	no	DET	DT	PronType=Neg	6	det	_	_
6	brain	brain	NOUN	NN	Number=Sing	4	obj	_	_
7	,	,	PUNCT	,	_	9	punct	_	_
8	can	can	AUX	MD	VerbForm=Fin	9	aux	_	_
9	regrow	regrow	VERB	VB	VerbForm=Inf	4	conj	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	lost	lose	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	12	amod	_	Agree=R8-pos-agree|Haiku=12:amod|HaikuPos=ADJ:VBN:_
12	arm	arm	NOUN	NN	Number=Sing	9	obj	_	_
13	,	,	PUNCT	,	_	15	punct	_	_
14	and	and	CCONJ	CC	_	15	cc	_	_
15	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	Agree=R3-conj-first|Haiku=9:conj
16	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
17	simple	simple	ADJ	JJ	Degree=Pos	19	amod	_	_
18	eye	eye	NOUN	NN	Number=Sing	19	compound	_	_
19	spot	spot	NOUN	NN	Number=Sing	15	obj	_	_
20	at	at	ADP	IN	_	22	case	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	tip	tip	NOUN	NN	Number=Sing	19	nmod	_	_
23	of	of	ADP	IN	_	25	case	_	_
24	each	each	DET	DT	PronType=Tot	25	det	_	_
25	arm	arm	NOUN	NN	Number=Sing	22	nmod	_	_
26	that	that	PRON	WDT	PronType=Rel	27	nsubj	_	_
27	senses	sense	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	25	acl:relcl	_	_
28	light	light	NOUN	NN	Number=Sing	27	obj	_	_
29	.	.	PUNCT	.	_	4	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 | a sea star | no brain |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent brain=Patient |
| 2 | **regrow** | can | a sea star *not said here* | a lost arm |  |  |  |  | tree rules |
| 3 | **lose** | participle |  |  |  |  |  |  | vn succeed-74-3-1 «NP V»: agent=Agent |
| 4 | **have** | present | a sea star *not said here* | a simple eye spot |  | the tip of each arm |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent spot=Patient |
| 5 | **sense** | present | each arm | light |  |  |  |  | vn see-30.1-1 «NP V S»: agent=Experiencer light=Stimulus |

<!-- .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:092-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea.lesson:14`.

**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): R3-conj-first ×1, R8-pos-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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- ← previous: [The aquarium: jellyfish, octopuses, se…, 13](https://md.mova.elamur.ai/free/en/corpora/school/biology/92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea/13/)
- next →: [The aquarium: jellyfish, octopuses, se…, 15](https://md.mova.elamur.ai/free/en/corpora/school/biology/92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea/15/)
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