---
title: What would happen if all the snakes vanished from a farm? — Snakes to keep away from: cobras, mamb… · tree and pragmatics
description: What would happen if all the snakes vanished from a farm? Test 9 · ★ of lesson 322 «Snakes to keep away from: cobras, mambas, vipers and rattlesnakes» 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 9 · ★ · Snakes to keep away from: cobras, mambas, vipers and rattl…

<!-- .ven lang=en -->
What would happen if all the snakes vanished from a farm?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** snakes · **What happens:** happen, vanish · **To what, where:** farm

<!-- .vabout -->
This is test 9 · ★ of lesson 322 «Snakes to keep away from: cobras, mambas, vipers and rattlesnakes» 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/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/#t9).

## The question {#question}

```conllu
# sent_id = question:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes:t9:1
# text = What would happen if all the snakes vanished from a farm?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
4	if	if	SCONJ	IN	_	8	mark	_	_
5	all	all	DET	PDT	PronType=Tot	7	det:predet	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	snakes	snake	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	vanished	vanish	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	3	advcl	_	_
9	from	from	ADP	IN	_	11	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	farm	farm	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
12	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | would |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **vanish** *a condition, not said to happen* | past | all snakes |  |  | a farm |  |  | vn disappearance-48.2-1 «NP V PP»: agent=Theme from farm=Initial\_Location |

<!-- .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 -->
Crops would grow twice as fast

```conllu
# sent_id = question:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes:t9:o1:1
# text = Crops would grow twice as fast
1	Crops	crop	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	grow	grow	VERB	VB	VerbForm=Inf	0	root	_	_
4	twice	twice	ADV	RB	NumForm=Word|NumType=Mult	3	advmod	_	_
5	as	as	ADV	RB	_	6	advmod	_	_
6	fast	fast	ADV	RB	Degree=Pos	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | would | Crops |  |  |  |  | fast, twice *property* | vn appear-48.1.1 «NP V»: agent=Theme |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Rats might grow in number and spoil more grain

```conllu
# sent_id = question:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes:t9:o2:1
# text = Rats might grow in number and spoil more grain
1	Rats	rat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	might	might	AUX	MD	VerbForm=Fin	3	aux	_	_
3	grow	grow	VERB	VB	VerbForm=Inf	0	root	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	number	number	NOUN	NN	Number=Sing	3	obl	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	spoil	spoil	VERB	VB	VerbForm=Inf	3	conj	_	_
8	more	more	ADJ	JJR	Degree=Cmp	9	amod	_	_
9	grain	grain	NOUN	NN	Number=Sing	7	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | might | Rats |  |  | number |  |  | vn appear-48.1.1 «NP V PP.location»: agent=Theme in number=Location |
| 2 | **spoil** | infinitive | Rats *not said here* | more grain |  |  |  |  | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
Nothing at all would change

```conllu
# sent_id = question:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes:t9:o3:1
# text = Nothing at all would change
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	5	nsubj	_	_
2	at	at	ADP	IN	_	3	case	_	_
3	all	all	DET	DT	PronType=Tot	1	nmod	_	_
4	would	would	AUX	MD	VerbForm=Fin	5	aux	_	_
5	change	change	VERB	VB	VerbForm=Inf	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | would | Nothing |  |  |  |  |  | vn dress-41.1.1-1-1 «NP V»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
All the rats would leave too, because rats follow the snakes

```conllu
# sent_id = question:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes:t9:o4:1
# text = All the rats would leave too, because rats follow the snakes
1	All	all	DET	PDT	PronType=Tot	3	det:predet	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	rats	rat	NOUN	NNS	Number=Plur	5	nsubj	_	_
4	would	would	AUX	MD	VerbForm=Fin	5	aux	_	_
5	leave	leave	VERB	VB	VerbForm=Inf	0	root	_	_
6	too	too	ADV	RB	_	5	advmod	_	SpaceAfter=No
7	,	,	PUNCT	,	_	10	punct	_	_
8	because	because	SCONJ	IN	_	10	mark	_	_
9	rats	rat	NOUN	NNS	Number=Plur	10	nsubj	_	_
10	follow	follow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	snakes	snake	NOUN	NNS	Number=Plur	10	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** | would | all rats |  |  |  |  |  | vn escape-51.1-1-1 «NP V»: agent=Theme |
| 2 | **follow** | present | rats | the snakes |  |  |  |  | vn chase-51.6 «NP V NP»: agent=Agent snake=Theme |

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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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