---
title: Why might cats and mice both be busiest at dawn and dusk? — How real cats hunt: stalking, waiting… · tree and pragmatics
description: Why might cats and mice both be busiest at dawn and dusk? Test 10 · ★★ of lesson 119 «How real cats hunt: stalking, waiting and pouncing» 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 10 · ★★ · How real cats hunt: stalking, waiting and pouncing

<!-- .ven lang=en -->
Why might cats and mice both be busiest at dawn and dusk?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 2 · wrong ✗ · **Who acts:** cats · **What happens:** be

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This is test 10 · ★★ of lesson 119 «How real cats hunt: stalking, waiting and pouncing» 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/119-how-real-cats-hunt/#t10).

## The question {#question}

```conllu
# sent_id = question:biology:119-how-real-cats-hunt:t10:1
# text = Why might cats and mice both be busiest at dawn and dusk?
1	Why	why	ADV	WRB	PronType=Int	8	advmod	_	_
2	might	might	AUX	MD	VerbForm=Fin	8	aux	_	_
3	cats	cat	NOUN	NNS	Number=Plur	8	nsubj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	mice	mouse	NOUN	NNS	Number=Plur	3	conj	_	_
6	both	both	ADV	RB	_	8	advmod	_	_
7	be	be	AUX	VB	VerbForm=Inf	8	cop	_	_
8	busiest	busy	ADJ	JJS	Degree=Sup	0	root	_	_
9	at	at	ADP	IN	_	10	case	_	_
10	dawn	dawn	NOUN	NN	Number=Sing	8	obl	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	dusk	dusk	NOUN	NN	Number=Sing	10	conj	_	SpaceAfter=No
13	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | might | cats and mice |  |  |  | dawn | both, busy *property* | tree rules |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Mice like watching the sunrise

```conllu
# sent_id = question:biology:119-how-real-cats-hunt:t10:o1:1
# text = Mice like watching the sunrise
1	Mice	mouse	NOUN	NNS	Number=Plur	0	root	_	_
2	like	like	SCONJ	IN	_	3	mark	_	_
3	watching	watch	VERB	VBG	VerbForm=Ger	1	acl	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	sunrise	sunrise	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **watch** | gerund | Mice *not said here* |  |  |  | sunrise |  | vn search-35.2 «NP V PP.location»: agent=Agent |

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

<!-- .ven lang=en -->
Cats have evolved to hunt when mice are out

```conllu
# sent_id = question:biology:119-how-real-cats-hunt:t10:o2:1
# text = Cats have evolved to hunt when mice are out
1	Cats	cat	NOUN	NNS	Number=Plur	3	nsubj:pass	_	_
2	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	evolved	evolve	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	hunt	hunt	VERB	VB	VerbForm=Inf	3	xcomp	_	_
6	when	when	ADV	WRB	PronType=Int	9	advmod	_	_
7	mice	mouse	NOUN	NNS	Number=Plur	9	nsubj	_	_
8	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
9	out	out	ADV	RB	_	5	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **evolve** | present · perfect · passive |  | Cats |  |  |  |  | tree rules |
| 2 | **hunt** | to-infinitive |  |  |  |  |  |  | vn hunt-35.1 «NP V»: agent=Agent |
| 3 | **is** | present | mice |  |  |  |  | out *property* | tree rules |

### Option 3 · ← Mova's choice {#o3}

<!-- .ven lang=en -->
Cats are scared of the dark and the light

```conllu
# sent_id = question:biology:119-how-real-cats-hunt:t10:o3:1
# text = Cats are scared of the dark and the light
1	Cats	cat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	scared	scared	ADJ	JJ	Degree=Pos	0	root	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	dark	dark	NOUN	NN	Number=Sing	3	obl	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	light	light	NOUN	NN	Number=Sing	6	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Cats |  |  |  |  | of the dark and the light; scared *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
They agree to meet then

```conllu
# sent_id = question:biology:119-how-real-cats-hunt:t10:o4:1
# text = They agree to meet then
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	agree	agree	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	to	to	PART	TO	_	4	mark	_	_
4	meet	meet	VERB	VB	VerbForm=Inf	2	xcomp	_	_
5	then	then	ADV	RB	PronType=Dem	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **agree** *speech: agree* | present | They |  |  |  |  |  | vn correspond-36.1-1 «NP V what S\_INF»: agent=Agent clause=Topic |
| 2 | **meet** *not said to happen* | to-infinitive | They *not said here* |  |  |  | then |  | vn meet-36.3-1 «NP V»: agent=Agent |

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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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