---
title: Ascertain the aggregate number of legs, inclusive of claws, possesse… — Coral reefs, rockpools and the seashore · tree and pragmatics
description: Ascertain the aggregate number of legs, inclusive of claws, possessed by four crabs, each bearing two claws and eight walking legs. Exam question 4 of lesson 9 «Coral reefs, rockpools and the seashore» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the que
---

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# Exam question 4 · Coral reefs, rockpools and the seashore

<!-- .ven lang=en -->
Ascertain the aggregate number of legs, inclusive of claws, possessed by four crabs, each bearing two claws and eight walking legs.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, each · **What happens:** ascertain, possess, bear, walk · **To what, where:** aggregate number, claws, two claws

<!-- .vabout -->
This is exam question 4 of lesson 9 «Coral reefs, rockpools and the seashore» 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/9-coral-reefs-rockpools-and-the-seashore/#e4).

## The question {#question}

```conllu
# sent_id = question:biology:9-coral-reefs-rockpools-and-the-seashore:e4:1
# text = Ascertain the aggregate number of legs, inclusive of claws, possessed by four crabs, each bearing two claws and eight walking legs.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	aggregate	aggregate	NOUN	NN	Number=Sing	4	compound	_	_
4	number	number	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	legs	leg	NOUN	NNS	Number=Plur	4	nmod	_	SpaceAfter=No
7	,	,	PUNCT	,	_	8	punct	_	_
8	inclusive	inclusive	ADJ	JJ	Degree=Pos	6	amod	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	claws	claw	NOUN	NNS	Number=Plur	8	obl	_	SpaceAfter=No
11	,	,	PUNCT	,	_	12	punct	_	_
12	possessed	possess	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
13	by	by	ADP	IN	_	15	case	_	_
14	four	four	NUM	CD	NumForm=Word|NumType=Card	15	nummod	_	_
15	crabs	crab	NOUN	NNS	Number=Plur	12	obl	_	SpaceAfter=No
16	,	,	PUNCT	,	_	18	punct	_	_
17	each	each	DET	DT	PronType=Tot	18	nsubj	_	_
18	bearing	bear	VERB	VBG	Tense=Pres|VerbForm=Part	1	advcl	_	_
19	two	two	NUM	CD	NumForm=Word|NumType=Card	20	nummod	_	_
20	claws	claw	NOUN	NNS	Number=Plur	18	obj	_	_
21	and	and	CCONJ	CC	_	24	cc	_	_
22	eight	eight	NUM	CD	NumForm=Word|NumType=Card	24	nummod	_	_
23	walking	walk	VERB	VBG	VerbForm=Ger	24	amod	_	_
24	legs	leg	NOUN	NNS	Number=Plur	20	conj	_	SpaceAfter=No
25	.	.	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 aggregate number of legs |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent number=Topic |
| 2 | **possess** | participle |  | claws *not said here* |  |  |  | by four crabs | vn own-100.1 «NP V NP»: agent=Pivot |
| 3 | **bear** | gerund | each | two claws and eight walking legs |  |  |  |  | vn birth-28.2-1-1 «NP V NP»: agent=Agent claw=Patient |
| 4 | **walk** | gerund |  |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=Theme |

<!-- .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 -->
Eight

```conllu
# sent_id = question:biology:9-coral-reefs-rockpools-and-the-seashore:e4:o1:1
# text = Eight
1	Eight	eight	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
Thirty-two

```conllu
# sent_id = question:biology:9-coral-reefs-rockpools-and-the-seashore:e4:o2:1
# text = Thirty-two
1	Thirty	thirty	NUM	CD	NumForm=Word|NumType=Card	0	root	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	3	punct	_	SpaceAfter=No
3	two	two	NUM	CD	NumForm=Word|NumType=Card	1	conj	_	_
```

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

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Forty

```conllu
# sent_id = question:biology:9-coral-reefs-rockpools-and-the-seashore:e4:o3:1
# text = Forty
1	Forty	forty	NOUN	NN	Number=Sing	0	root	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Thirty-six

```conllu
# sent_id = question:biology:9-coral-reefs-rockpools-and-the-seashore:e4:o4:1
# text = Thirty-six
1	Thirty	thirty	NUM	CD	NumForm=Word|NumType=Card	0	root	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	3	punct	_	SpaceAfter=No
3	six	six	NUM	CD	NumForm=Word|NumType=Card	1	conj	_	_
```

<!-- .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: [Coral reefs, rockpools and the seashore, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/9-coral-reefs-rockpools-and-the-seashore/e3/)
- next →: [Rivers, lakes and ponds, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/10-rivers-lakes-and-ponds/t1/)
- ↑ back to [Coral reefs, rockpools and the seashore](https://md.mova.elamur.ai/free/en/corpora/questions/biology/9-coral-reefs-rockpools-and-the-seashore/)