---
title: In Moana, the giant crab Tamatoa covers his shell with shiny treasur… — Masters of camouflage · tree and pragmatics
description: In Moana, the giant crab Tamatoa covers his shell with shiny treasure to look fancy. Why do real decorator crabs cover their shells? Test 3 · ★ of lesson 189 «Masters of camouflage» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each op
---

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# Test 3 · ★ · Masters of camouflage

<!-- .ven lang=en -->
In Moana, the giant crab Tamatoa covers his shell with shiny treasure to look fancy. Why do real decorator crabs cover their shells?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** giant crab, real decorator crabs · **What happens:** cover, look, do · **To what, where:** shell, Moana, shells

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This is test 3 · ★ of lesson 189 «Masters of camouflage» 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/189-masters-of-camouflage/#t3).

## The question {#question}

<!-- .note -->
*Sentence 1:* In Moana, the giant crab Tamatoa covers his shell with shiny treasure to look fancy.

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:1
# text = In Moana, the giant crab Tamatoa covers his shell with shiny treasure to look fancy.
1	In	in	ADP	IN	_	2	case	_	_
2	Moana	Moana	PROPN	NNP	Number=Sing	8	obl	_	SpaceAfter=No
3	,	,	PUNCT	,	_	2	punct	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	giant	giant	ADJ	JJ	Degree=Pos	6	amod	_	_
6	crab	crab	NOUN	NN	Number=Sing	8	nsubj	_	_
7	Tamatoa	Tamatoa	PROPN	NNP	Number=Sing	6	appos	_	_
8	covers	cover	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	his	his	PRON	PRP$	Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
10	shell	shell	NOUN	NN	Number=Sing	8	obj	_	_
11	with	with	ADP	IN	_	13	case	_	_
12	shiny	shiny	ADJ	JJ	Degree=Pos	13	amod	_	_
13	treasure	treasure	NOUN	NN	Number=Sing	8	obl	_	_
14	to	to	PART	TO	_	15	mark	_	_
15	look	look	VERB	VB	VerbForm=Inf	8	advcl	_	_
16	fancy	fancy	ADJ	JJ	Degree=Pos	15	xcomp	_	SpaceAfter=No
17	.	.	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cover** | present | the giant crab | crab's shell |  | Moana |  | with shiny treasure | vn fill-9.8-1 «NP V NP PP.theme»: agent=Agent shell=Destination with treasure=Theme |
| 2 | **look** | to-infinitive | the giant crab *not said here* |  |  |  |  | fancy *property* | vn stimulus\_subject-30.4 «NP V ADJ»: agent=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.

<!-- .note -->
*Sentence 2:* Why do real decorator crabs cover their shells?

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:2
# text = Why do real decorator crabs cover their shells?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	6	advcl	_	_
3	real	real	ADJ	JJ	Degree=Pos	5	amod	_	_
4	decorator	decorator	NOUN	NN	Number=Sing	5	compound	_	_
5	crabs	crab	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	cover	cover	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
8	shells	shell	NOUN	NNS	Number=Plur	6	obj	_	SpaceAfter=No
9	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present | real decorator crabs *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **cover** | present | real decorator crabs | their shells |  |  |  |  | vn fill-9.8-1 «NP V NP.destination»: agent=Agent shell=Destination |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
To hide from predators

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:o1:1
# text = To hide from predators
1	To	to	PART	TO	_	2	mark	_	_
2	hide	hide	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	from	from	ADP	IN	_	4	case	_	_
4	predators	predator	NOUN	NNS	Number=Plur	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hide** | to-infinitive |  |  |  | predators |  |  | vn concealment-16-1 «NP V PP.beneficiary»: agent=Agent from predator=Beneficiary |

### Option 2 {#o2}

<!-- .ven lang=en -->
To keep their shells warm

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:o2:1
# text = To keep their shells warm
1	To	to	PART	TO	_	2	mark	_	_
2	keep	keep	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	shells	shell	NOUN	NNS	Number=Plur	2	obj	_	_
5	warm	warm	ADJ	JJ	Degree=Pos	2	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | to-infinitive |  | their shells |  |  |  | warm *property* | vn keep-15.2 «NP V NP»: agent=Agent shell=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
To show off to other crabs on the reef

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:o3:1
# text = To show off to other crabs on the reef
1	To	to	PART	TO	_	2	mark	_	_
2	show	show	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	off	off	ADP	RP	_	2	compound:prt	_	_
4	to	to	ADP	IN	_	6	case	_	_
5	other	other	ADJ	JJ	Degree=Pos	6	amod	_	_
6	crabs	crab	NOUN	NNS	Number=Plur	2	obl	_	_
7	on	on	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	reef	reef	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **show off** | to-infinitive |  |  | other crabs | the reef |  |  | vn transfer\_mesg-37.1.1-1-1 «NP V PP.recipient how S»: agent=Agent to crab=Recipient |

### Option 4 {#o4}

<!-- .ven lang=en -->
To catch the eye of a mate

```conllu
# sent_id = question:biology:189-masters-of-camouflage:t3:o4:1
# text = To catch the eye of a mate
1	To	to	PART	TO	_	2	mark	_	_
2	catch	catch	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	eye	eye	NOUN	NN	Number=Sing	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	mate	mate	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **catch** | to-infinitive |  | the eye of a mate |  |  |  |  | vn get-13.5.1 «NP V NP»: agent=Agent eye=Theme |

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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.

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