---
title: A snail the size of a fist crawls over a log. How does it eat leaves… — The Congo rainforest: gorillas, bonobo… · tree and pragmatics
description: A snail the size of a fist crawls over a log. How does it eat leaves with no jaws like ours? Test 10 · ★ of lesson 159 «The Congo rainforest: gorillas, bonobos, okapis and forest elephants» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of
---

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# Test 10 · ★ · The Congo rainforest: gorillas, bonobos, okapis and forest…

<!-- .ven lang=en -->
A snail the size of a fist crawls over a log. How does it eat leaves with no jaws like ours?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** snail · **What happens:** crawl, eat · **To what, where:** log, leaves

<!-- .vabout -->
This is test 10 · ★ of lesson 159 «The Congo rainforest: gorillas, bonobos, okapis and forest elephants» 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/159-the-congo-rainforest/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* A snail the size of a fist crawls over a log.

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:1
# text = A snail the size of a fist crawls over a log.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	snail	snail	NOUN	NN	Number=Sing	8	nsubj	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	size	size	NOUN	NN	Number=Sing	2	nmod:unmarked	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	fist	fist	NOUN	NN	Number=Sing	2	nmod	_	_
8	crawls	crawl	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	over	over	ADP	IN	_	11	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	log	log	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **crawl** | present | a snail  the size of a fist |  |  | a log |  |  | vn run-51.3.2 «NP V PP.location»: agent=Theme over log=Trajectory |

<!-- .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:* How does it eat leaves with no jaws like ours?

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:2
# text = How does it eat leaves with no jaws like ours?
1	How	how	ADV	WRB	PronType=Int	4	advmod	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	eat	eat	VERB	VB	VerbForm=Inf	0	root	_	_
5	leaves	leaf	NOUN	NNS	Number=Plur	4	obj	_	_
6	with	with	ADP	IN	_	8	case	_	_
7	no	no	DET	DT	PronType=Neg	8	det	_	_
8	jaws	jaw	NOUN	NNS	Number=Plur	4	obl	_	_
9	like	like	ADP	IN	_	10	case	_	_
10	ours	our	PRON	PRP	Number=Plur|Person=1|Poss=Yes|PronType=Prs	8	nmod	_	SpaceAfter=No
11	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **eat** | present · do-support | snail | leaves |  |  |  | with no jaws like ours | vn eat-39.1-1 «NP V NP»: agent=Agent leaf=Patient |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
It soaks them in water

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:o1:1
# text = It soaks them in water
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	soaks	soak	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	2	obj	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	water	water	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **soak** | present | It | them *= they* |  | water |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme they=Destination |

### Option 2 {#o2}

<!-- .ven lang=en -->
It does not eat at all

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:o2:1
# text = It does not eat at all
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	eat	eat	VERB	VB	VerbForm=Inf	0	root	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	all	all	DET	DT	PronType=Tot	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **eat** | present · do-support | It |  |  | all |  |  | vn eat-39.1-1 «NP V»: agent=Agent |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
It scrapes them with thousands of tiny teeth on its radula

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:o3:1
# text = It scrapes them with thousands of tiny teeth on its radula
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	scrapes	scrape	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	2	obj	_	_
4	with	with	ADP	IN	_	5	case	_	_
5	thousands	thousand	NOUN	NNS	Number=Plur	2	obl	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	tiny	tiny	ADJ	JJ	Degree=Pos	8	amod	_	_
8	teeth	tooth	NOUN	NNS	Number=Plur	5	nmod	_	_
9	on	on	ADP	IN	_	11	case	_	_
10	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	radula	radula	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **scrape** | present | It | them *= they* |  | its radula |  | with thousands of tiny teeth | vn cut-21.1-1 «NP V NP»: agent=Agent they=Patient with thousand=Instrument |

### Option 4 {#o4}

<!-- .ven lang=en -->
It sucks them through a straw

```conllu
# sent_id = question:biology:159-the-congo-rainforest:t10:o4:1
# text = It sucks them through a straw
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	sucks	suck	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	2	obj	_	_
4	through	through	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	straw	straw	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **suck** | present | It | them *= they* |  | a straw |  |  | vn wipe\_manner-10.4.1-1 «NP V NP.source»: agent=Agent they=Source |

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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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