---
title: why do swallows fly south in autumn — Migration and hibernation · tree and pragmatics
description: why do swallows fly south in autumn Test 10 · ★ of lesson 28 «Migration and hibernation» 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 10 · ★ · Migration and hibernation

<!-- .ven lang=en -->
why do swallows fly south in autumn

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** swallows · **What happens:** fly

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This is test 10 · ★ of lesson 28 «Migration and hibernation» 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/28-migration-and-hibernation/#t10).

## The question {#question}

```conllu
# sent_id = question:world:28-migration-and-hibernation:t10:1
# text = why do swallows fly south in autumn
1	why	why	ADV	WRB	PronType=Int	4	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	swallows	swallow	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	fly	fly	VERB	VB	VerbForm=Inf	0	root	_	_
5	south	south	ADV	RB	_	4	advmod	_	_
6	in	in	ADP	IN	_	7	case	_	_
7	autumn	autumn	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fly** | present · do-support | swallows |  |  |  | autumn | south *property* | vn spatial\_configuration-47.6-1 «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 -->
Because the wind blows them there

```conllu
# sent_id = question:world:28-migration-and-hibernation:t10:o1:1
# text = Because the wind blows them there
1	Because	because	SCONJ	IN	_	4	mark	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	wind	wind	NOUN	NN	Number=Sing	4	nsubj	_	_
4	blows	blow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	4	obj	_	_
6	there	there	ADV	RB	PronType=Dem	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **blow** | present | the wind | them *= they* |  | there |  |  | vn split-23.2 «NP V NP apart»: agent=Agent they=Patient |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
To find food and warmth for the winter

```conllu
# sent_id = question:world:28-migration-and-hibernation:t10:o2:1
# text = To find food and warmth for the winter
1	To	to	PART	TO	_	2	mark	_	_
2	find	find	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	food	food	NOUN	NN	Number=Sing	2	obj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	warmth	warmth	NOUN	NN	Number=Sing	3	conj	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	winter	winter	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **find** | to-infinitive |  | food and warmth |  |  | winter |  | vn discover-84 «NP V NP»: agent=Agent food=Topic |

### Option 3 {#o3}

<!-- .ven lang=en -->
To get away from the long days

```conllu
# sent_id = question:world:28-migration-and-hibernation:t10:o3:1
# text = To get away from the long days
1	To	to	PART	TO	_	2	mark	_	_
2	get	get	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	away	away	ADV	RB	_	2	advmod	_	_
4	from	from	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	long	long	ADJ	JJ	Degree=Pos	7	amod	_	_
7	days	day	NOUN	NNS	Number=Plur	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get away** | to-infinitive |  |  |  |  | day | away *property* | vn withdraw-82-2 «NP V»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
To lay their eggs in the snow

```conllu
# sent_id = question:world:28-migration-and-hibernation:t10:o4:1
# text = To lay their eggs in the snow
1	To	to	PART	TO	_	2	mark	_	_
2	lay	lay	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	eggs	egg	NOUN	NNS	Number=Plur	2	obj	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	snow	snow	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lay** | to-infinitive |  | their eggs |  | the snow |  |  | vn put\_spatial-9.2 «NP V NP PP.destination»: agent=Agent egg=Theme in snow=Destination |

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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: [Migration and hibernation, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/world/28-migration-and-hibernation/t9/)
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