---
title: Why do some of the biggest sea animals eat some of the smallest food? — The aquarium: the shark tunnel and the… · tree and pragmatics
description: Why do some of the biggest sea animals eat some of the smallest food? Test 12 of lesson 91 «The aquarium: the shark tunnel and the rays» 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 right.
---

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# Test 12 · The aquarium: the shark tunnel and the rays

<!-- .ven lang=en -->
Why do some of the biggest sea animals eat some of the smallest food?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** some · **What happens:** do, eat · **To what, where:** some

<!-- .vabout -->
This is test 12 of lesson 91 «The aquarium: the shark tunnel and the rays» 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/91-the-aquarium-the-shark-tunnel-and-the-rays/#t12).

## The question {#question}

```conllu
# sent_id = question:biology:91-the-aquarium-the-shark-tunnel-and-the-rays:t12:1
# text = Why do some of the biggest sea animals eat some of the smallest food?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	9	advcl	_	_
3	some	some	DET	DT	PronType=Ind	9	nsubj	_	_
4	of	of	ADP	IN	_	8	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
6	biggest	big	ADJ	JJS	Degree=Sup	8	amod	_	_
7	sea	sea	NOUN	NN	Number=Sing	8	compound	_	_
8	animals	animal	NOUN	NNS	Number=Plur	3	nmod	_	_
9	eat	eat	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	some	some	DET	DT	PronType=Ind	9	obj	_	_
11	of	of	ADP	IN	_	14	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
13	smallest	small	ADJ	JJS	Degree=Sup	14	amod	_	_
14	food	food	NOUN	NN	Number=Sing	10	nmod	_	SpaceAfter=No
15	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present | some *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **eat** | present | some | some |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent some=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.

## The options {#options}

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

<!-- .ven lang=en -->
Plankton is everywhere, so filtering it feeds a huge body

```conllu
# sent_id = question:biology:91-the-aquarium-the-shark-tunnel-and-the-rays:t12:o1:1
# text = Plankton is everywhere, so filtering it feeds a huge body
1	Plankton	plankton	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	everywhere	everywhere	ADV	RB	PronType=Tot	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	8	punct	_	_
5	so	so	ADV	RB	_	8	advmod	_	_
6	filtering	filter	VERB	VBG	VerbForm=Ger	8	csubj	_	_
7	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	obj	_	_
8	feeds	feed	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	huge	huge	ADJ	JJ	Degree=Pos	11	amod	_	_
11	body	body	NOUN	NN	Number=Sing	8	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Plankton |  |  |  |  | everywhere *property* | tree rules |
| 2 | **filter** | gerund |  | Plankton |  |  |  |  | vn wipe\_instr-10.4.2 «NP V NP.initial\_location»: agent=Agent it=Initial\_Location |
| 3 | **feed** | present | filtering | a huge body |  |  |  |  | vn feeding-39.7 «NP V NP»: agent=Agent body=Recipient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Small food is easier to see in the dark

```conllu
# sent_id = question:biology:91-the-aquarium-the-shark-tunnel-and-the-rays:t12:o2:1
# text = Small food is easier to see in the dark
1	Small	small	ADJ	JJ	Degree=Pos	2	amod	_	_
2	food	food	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	easier	easy	ADJ	JJR	Degree=Cmp	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	see	see	VERB	VB	VerbForm=Inf	4	csubj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	dark	dark	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Small food |  |  |  |  | easy *property* | tree rules |
| 2 | **see** | to-infinitive |  |  |  | the dark |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |

### Option 3 {#o3}

<!-- .ven lang=en -->
They are too slow to catch anything else

```conllu
# sent_id = question:biology:91-the-aquarium-the-shark-tunnel-and-the-rays:t12:o3:1
# text = They are too slow to catch anything else
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	too	too	ADV	RB	_	4	advmod	_	_
4	slow	slow	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	catch	catch	VERB	VB	VerbForm=Inf	4	xcomp	_	_
7	anything	anything	PRON	NN	Number=Sing|PronType=Ind	6	obj	_	_
8	else	else	ADV	RB	_	7	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | They |  |  |  |  | slow *property* | tree rules |
| 2 | **catch** | to-infinitive | They *not said here* | anything |  |  |  |  | vn get-13.5.1 «NP V NP»: agent=Agent anything=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
Their teeth are too weak for bigger food

```conllu
# sent_id = question:biology:91-the-aquarium-the-shark-tunnel-and-the-rays:t12:o4:1
# text = Their teeth are too weak for bigger food
1	Their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	teeth	tooth	NOUN	NNS	Number=Plur	5	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	too	too	ADV	RB	_	5	advmod	_	_
5	weak	weak	ADJ	JJ	Degree=Pos	0	root	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	bigger	big	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	food	food	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Their teeth |  |  |  |  | for bigger food; weak *property* | tree rules |

<!-- div src -->

**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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