---
title: Ascertain the approximate ratio of the mass of an adult domestic cat… — Tom and Jerry: do real cats really cha… · tree and pragmatics
description: Ascertain the approximate ratio of the mass of an adult domestic cat to that of a house mouse. Exam question 4 of lesson 118 «Tom and Jerry: do real cats really chase mice?» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mo
---

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# Exam question 4 · Tom and Jerry: do real cats really chase mice?

<!-- .ven lang=en -->
Ascertain the approximate ratio of the mass of an adult domestic cat to that of a house mouse.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** you · **What happens:** ascertain · **To what, where:** approximate ratio

<!-- .vabout -->
This is exam question 4 of lesson 118 «Tom and Jerry: do real cats really chase mice?» of the biology course of Mova's primary school, asked in stiff, formal language. 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/118-tom-and-jerry-do-real-cats-chase-mice/#e4).

## The question {#question}

```conllu
# sent_id = question:biology:118-tom-and-jerry-do-real-cats-chase-mice:e4:1
# text = Ascertain the approximate ratio of the mass of an adult domestic cat to that of a house mouse.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	approximate	approximate	ADJ	JJ	Degree=Pos	4	amod	_	_
4	ratio	ratio	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	mass	mass	NOUN	NN	Number=Sing	4	nmod	_	_
8	of	of	ADP	IN	_	12	case	_	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
10	adult	adult	NOUN	NN	Number=Sing	12	nsubj	_	_
11	domestic	domestic	ADJ	JJ	Degree=Pos	12	amod	_	_
12	cat	cat	NOUN	NN	Number=Sing	7	nmod	_	_
13	to	to	ADP	IN	_	14	case	_	_
14	that	that	PRON	DT	Number=Sing|PronType=Dem	12	nmod	_	_
15	of	of	ADP	IN	_	18	case	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	18	det	_	_
17	house	house	NOUN	NN	Number=Sing	18	compound	_	_
18	mouse	mouse	NOUN	NN	Number=Sing	14	nmod	_	SpaceAfter=No
19	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the approximate ratio of the mass of a domestic cat to that |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent ratio=Topic |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Approximately one to one

```conllu
# sent_id = question:biology:118-tom-and-jerry-do-real-cats-chase-mice:e4:o1:1
# text = Approximately one to one
1	Approximately	approximately	ADV	RB	_	2	advmod	_	_
2	one	one	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
3	to	to	ADP	IN	_	4	case	_	_
4	one	one	NUM	CD	NumForm=Word|NumType=Card	2	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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

<!-- .ven lang=en -->
Approximately two hundred to one

```conllu
# sent_id = question:biology:118-tom-and-jerry-do-real-cats-chase-mice:e4:o2:1
# text = Approximately two hundred to one
1	Approximately	approximately	ADV	RB	_	3	advmod	_	_
2	two	two	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	_
3	hundred	hundred	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
4	to	to	ADP	IN	_	5	case	_	_
5	one	one	NUM	CD	NumForm=Word|NumType=Card	3	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Approximately two to one

```conllu
# sent_id = question:biology:118-tom-and-jerry-do-real-cats-chase-mice:e4:o3:1
# text = Approximately two to one
1	Approximately	approximately	ADV	RB	_	2	advmod	_	_
2	two	two	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
3	to	to	ADP	IN	_	4	case	_	_
4	one	one	NUM	CD	NumForm=Word|NumType=Card	2	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
Approximately twenty thousand to one

```conllu
# sent_id = question:biology:118-tom-and-jerry-do-real-cats-chase-mice:e4:o4:1
# text = Approximately twenty thousand to one
1	Approximately	approximately	ADV	RB	_	3	advmod	_	_
2	twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	_
3	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
4	to	to	ADP	IN	_	5	case	_	_
5	one	one	NUM	CD	NumForm=Word|NumType=Card	3	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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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- ← previous: [Tom and Jerry: do real cats really cha…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/118-tom-and-jerry-do-real-cats-chase-mice/e3/)
- next →: [How real cats hunt: stalking, waiting…, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/119-how-real-cats-hunt/t1/)
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