---
title: How could a butterfly farm help protect a rainforest? — The butterfly house · tree and pragmatics
description: How could a butterfly farm help protect a rainforest? Test 10 of lesson 98 «The butterfly house» 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 10 · The butterfly house

<!-- .ven lang=en -->
How could a butterfly farm help protect a rainforest?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** butterfly farm · **What happens:** help, protect · **To what, where:** rainforest

<!-- .vabout -->
This is test 10 of lesson 98 «The butterfly house» 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/98-the-butterfly-house/#t10).

## The question {#question}

```conllu
# sent_id = question:biology:98-the-butterfly-house:t10:1
# text = How could a butterfly farm help protect a rainforest?
1	How	how	ADV	WRB	PronType=Int	6	advmod	_	_
2	could	could	AUX	MD	VerbForm=Fin	6	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	butterfly	butterfly	NOUN	NN	Number=Sing	5	compound	_	_
5	farm	farm	NOUN	NN	Number=Sing	6	nsubj	_	_
6	help	help	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	protect	protect	VERB	VB	VerbForm=Inf	6	xcomp	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	rainforest	rainforest	NOUN	NN	Number=Sing	7	obj	_	SpaceAfter=No
10	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **help** | could | a butterfly farm |  |  |  |  |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent clause=Theme |
| 2 | **protect** | infinitive | a butterfly farm *not said here* | a rainforest |  |  |  |  | vn defend-72.3 «NP V NP»: agent=Agent rainforest=Beneficiary |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Local people earn money by keeping the forest standing

```conllu
# sent_id = question:biology:98-the-butterfly-house:t10:o1:1
# text = Local people earn money by keeping the forest standing
1	Local	local	ADJ	JJ	Degree=Pos	2	amod	_	_
2	people	people	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	earn	earn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	money	money	NOUN	NN	Number=Sing	3	obj	_	_
5	by	by	SCONJ	IN	_	6	mark	_	_
6	keeping	keep	VERB	VBG	Tense=Pres|VerbForm=Part	3	advcl	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
8	forest	forest	NOUN	NN	Number=Sing	9	compound	_	_
9	standing	standing	NOUN	NN	Number=Sing	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **earn** | present | Local people | money |  |  |  |  | vn get-13.5.1-1 «NP V NP»: agent=Agent money=Theme |
| 2 | **keep** | gerund | Local people *not said here* | the forest standing |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent standing=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
The farm scares away the loggers with clouds of butterflies

```conllu
# sent_id = question:biology:98-the-butterfly-house:t10:o2:1
# text = The farm scares away the loggers with clouds of butterflies
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	farm	farm	NOUN	NN	Number=Sing	3	nsubj	_	_
3	scares	scare	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	away	away	ADV	RB	_	3	advmod	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	loggers	logger	NOUN	NNS	Number=Plur	3	obj	_	_
7	with	with	ADP	IN	_	8	case	_	_
8	clouds	cloud	NOUN	NNS	Number=Plur	3	obl	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	butterflies	butterfly	NOUN	NNS	Number=Plur	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **scare away** | present | the farm | the loggers |  |  |  | with clouds of butterflies; away *property* | vn amuse-31.1 «NP V NP»: agent=Stimulus logger=Experiencer |
| 2 | **cloud** |  |  | butterflies |  |  |  |  | nom cloud «phenomenon transitive»: of=patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
The butterflies plant new trees

```conllu
# sent_id = question:biology:98-the-butterfly-house:t10:o3:1
# text = The butterflies plant new trees
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	butterflies	butterfly	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	plant	plant	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	new	new	ADJ	JJ	Degree=Pos	5	amod	_	_
5	trees	tree	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **plant** | present | the butterflies | new trees |  |  |  |  | vn establish-55.5-1 «NP V NP»: agent=Agent tree=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Butterflies eat the weeds that kill trees

```conllu
# sent_id = question:biology:98-the-butterfly-house:t10:o4:1
# text = Butterflies eat the weeds that kill trees
1	Butterflies	butterfly	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	eat	eat	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	weeds	weed	NOUN	NNS	Number=Plur	2	obj	_	_
5	that	that	PRON	WDT	PronType=Rel	6	nsubj	_	_
6	kill	kill	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
7	trees	tree	NOUN	NNS	Number=Plur	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **eat** | present | Butterflies | the weeds |  |  |  |  | vn eat-39.1-1 «NP V NP»: agent=Agent weed=Patient |
| 2 | **kill** | present | the weeds | trees |  |  |  |  | vn remove-10.1 «NP V NP»: agent=Agent tree=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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