---
title: Which is true about a butterfly and its caterpillar? — Life cycles · tree and pragmatics
description: Which is true about a butterfly and its caterpillar? Test 9 of lesson 25 «Life cycles» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 9 · Life cycles

<!-- .ven lang=en -->
Which is true about a butterfly and its caterpillar?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **What happens:** be

<!-- .vabout -->
This is test 9 of lesson 25 «Life cycles» of the world 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/world/25-life-cycles/#t9).

## The question {#question}

```conllu
# sent_id = question:world:25-life-cycles:t9:1
# text = Which is true about a butterfly and its caterpillar?
1	Which	which	PRON	WDT	PronType=Rel	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	_
4	about	about	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	butterfly	butterfly	NOUN	NN	Number=Sing	3	obl	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	9	nmod:poss	_	_
9	caterpillar	caterpillar	NOUN	NN	Number=Sing	6	conj	_	SpaceAfter=No
10	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | about a butterfly and its caterpillar; true *property* | tree rules |

<!-- .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 -->
They are two different kinds of animal

```conllu
# sent_id = question:world:25-life-cycles:t9:o1:1
# text = They are two different kinds of animal
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	two	two	NUM	CD	NumForm=Word|NumType=Card	5	nummod	_	_
4	different	different	ADJ	JJ	Degree=Pos	5	amod	_	_
5	kinds	kind	NOUN	NNS	Number=Plur	0	root	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	animal	animal	NOUN	NN	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | two different kinds |  |  |  | of animal | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
The caterpillar is the butterfly's food

```conllu
# sent_id = question:world:25-life-cycles:t9:o2:1
# text = The caterpillar is the butterfly's food
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	caterpillar	caterpillar	NOUN	NN	Number=Sing	7	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	butterfly	butterfly	NOUN	NN	Number=Sing	7	nmod:poss	_	SpaceAfter=No
6	's	's	PART	POS	_	5	case	_	_
7	food	food	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | the caterpillar | the butterfly's food |  |  |  |  | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
The butterfly turns back into a caterpillar

```conllu
# sent_id = question:world:25-life-cycles:t9:o3:1
# text = The butterfly turns back into a caterpillar
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	butterfly	butterfly	NOUN	NN	Number=Sing	3	nsubj	_	_
3	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	back	back	ADV	RB	_	3	advmod	_	_
5	into	into	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	caterpillar	caterpillar	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn back** | present | the butterfly |  |  |  |  | into a caterpillar | vn banish-10.2 «NP V NP»: agent=Agent |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
They are the same animal at different stages

```conllu
# sent_id = question:world:25-life-cycles:t9:o4:1
# text = They are the same animal at different stages
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	same	same	ADJ	JJ	Degree=Pos	5	amod	_	_
5	animal	animal	NOUN	NN	Number=Sing	0	root	_	_
6	at	at	ADP	IN	_	8	case	_	_
7	different	different	ADJ	JJ	Degree=Pos	8	amod	_	_
8	stages	stage	NOUN	NNS	Number=Plur	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | the same animal |  | different stages |  |  | tree rules |

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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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