---
title: A sea star loses an arm to a crab. What happens next? — The aquarium: jellyfish, octopuses, se… · tree and pragmatics
description: A sea star loses an arm to a crab. What happens next? Test 12 · ★ of lesson 92 «The aquarium: jellyfish, octopuses, sea stars and the deep sea» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 12 · ★ · The aquarium: jellyfish, octopuses, sea stars and the deep…

<!-- .ven lang=en -->
A sea star loses an arm to a crab. What happens next?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** sea star · **What happens:** lose, happen · **To what, where:** arm

<!-- .vabout -->
This is test 12 · ★ of lesson 92 «The aquarium: jellyfish, octopuses, sea stars and the deep sea» of the biology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea/#t12).

## The question {#question}

<!-- .note -->
*Sentence 1:* A sea star loses an arm to a crab.

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:1
# text = A sea star loses an arm to a crab.
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	loses	lose	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	an	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	arm	arm	NOUN	NN	Number=Sing	4	obj	_	_
7	to	to	ADP	IN	_	9	case	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	crab	crab	NOUN	NN	Number=Sing	4	obl	_	SpaceAfter=No
10	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lose** | present | a sea star | a arm |  |  |  | to a crab | vn succeed-74-3-1 «NP V NP»: agent=Agent arm=Eventuality |

<!-- .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.

<!-- .note -->
*Sentence 2:* What happens next?

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:2
# text = What happens next?
1	What	what	PRON	WP	PronType=Int	2	nsubj	_	_
2	happens	happen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	next	next	ADV	RB	_	2	advmod	_	SpaceAfter=No
4	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present |  |  |  |  |  | next *property* | vn occur-48.3-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The crab grows into a sea star

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:o1:1
# text = The crab grows into a sea star
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	crab	crab	NOUN	NN	Number=Sing	3	nsubj	_	_
3	grows	grow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	into	into	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	sea	sea	NOUN	NN	Number=Sing	7	compound	_	_
7	star	star	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | present | the crab |  |  |  |  | into a sea star *result* | vn become-109.1-1 «NP V PP.attribute»: agent=Patient into star=Result |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
It can grow a new arm

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:o2:1
# text = It can grow a new arm
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	_	_
3	grow	grow	VERB	VB	VerbForm=Inf	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	new	new	ADJ	JJ	Degree=Pos	6	amod	_	_
6	arm	arm	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | can | It | a new arm |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location arm=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
It walks with four arms forever

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:o3:1
# text = It walks with four arms forever
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	walks	walk	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	with	with	ADP	IN	_	5	case	_	_
4	four	four	NUM	CD	NumForm=Word|NumType=Card	5	nummod	_	_
5	arms	arm	NOUN	NNS	Number=Plur	2	obl	_	_
6	forever	forever	ADV	RB	_	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **walk** | present | It |  |  |  |  | with four arms; forever *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
It dies at once from the wound

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t12:o4:1
# text = It dies at once from the wound
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	dies	die	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	at	at	ADP	IN	_	4	case	_	_
4	once	once	ADV	RB	NumForm=Word|NumType=Mult	2	obl	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	wound	wound	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **die** | present | It |  |  | the wound |  |  | vn die-42.4-1 «NP V PP.cause»: agent=Patient from wound=Causer |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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