---
title: Ascertain the principal reason for which different constellations ar… — Stars, planets and constellations in t… · tree and pragmatics
description: Ascertain the principal reason for which different constellations are seen in winter and in summer. Exam question 4 of lesson 70 «Stars, planets and constellations in the night sky» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each opti
---

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# Exam question 4 · Stars, planets and constellations in the night sky

<!-- .ven lang=en -->
Ascertain the principal reason for which different constellations are seen in winter and in summer.

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** you · **What happens:** ascertain, see · **To what, where:** principal reason, different constellations

<!-- .vabout -->
This is exam question 4 of lesson 70 «Stars, planets and constellations in the night sky» of the world course of Mova's primary school, asked in stiff, formal language. 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/70-the-night-sky/#e4).

## The question {#question}

```conllu
# sent_id = question:world:70-the-night-sky:e4:1
# text = Ascertain the principal reason for which different constellations are seen in winter and in summer.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	PRON	WDT	PronType=Rel	10	obl	_	_
7	different	different	ADJ	JJ	Degree=Pos	8	amod	_	_
8	constellations	constellation	NOUN	NNS	Number=Plur	10	nsubj:pass	_	_
9	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	aux:pass	_	_
10	seen	see	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	_
11	in	in	ADP	IN	_	12	case	_	_
12	winter	winter	NOUN	NN	Number=Sing	10	obl	_	_
13	and	and	CCONJ	CC	_	15	cc	_	_
14	in	in	ADP	IN	_	15	case	_	_
15	summer	summer	NOUN	NN	Number=Sing	12	conj	_	SpaceAfter=No
16	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the principal reason |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent reason=Topic |
| 2 | **see** | present · passive |  | different constellations |  |  | winter | for the principal reason | vn comprehend-87.2-1-1 «NP V NP»: subject=Stimulus |

<!-- .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 -->
The stars change their shapes with the seasons

```conllu
# sent_id = question:world:70-the-night-sky:e4:o1:1
# text = The stars change their shapes with the seasons
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	stars	star	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	change	change	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	shapes	shape	NOUN	NNS	Number=Plur	3	obj	_	_
6	with	with	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	seasons	season	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | present | the stars | stars's shapes |  |  | season |  | vn dress-41.1.1-1-1 «NP V NP»: agent=Agent shape=Patient |

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

<!-- .ven lang=en -->
The Earth travels around the Sun

```conllu
# sent_id = question:world:70-the-night-sky:e4:o2:1
# text = The Earth travels around the Sun
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Earth	Earth	PROPN	NNP	Number=Sing	3	nsubj	_	_
3	travels	travel	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	around	around	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	Sun	Sun	PROPN	NNP	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **travel** | present | the Earth |  |  | the Sun |  |  | vn run-51.3.2-1 «NP V PP.location»: agent=Theme around sun=Trajectory |

### Option 3 {#o3}

<!-- .ven lang=en -->
The Moon conceals certain stars in summer

```conllu
# sent_id = question:world:70-the-night-sky:e4:o3:1
# text = The Moon conceals certain stars in summer
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Moon	Moon	PROPN	NNP	Number=Sing	3	nsubj	_	_
3	conceals	conceal	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	certain	certain	ADJ	JJ	Degree=Pos	5	amod	_	_
5	stars	star	NOUN	NNS	Number=Plur	3	obj	_	_
6	in	in	ADP	IN	_	7	case	_	_
7	summer	summer	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **conceal** | present | the Moon | certain stars |  |  | summer |  | vn concealment-16 «NP V NP»: agent=Agent star=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The stars travel around the Earth

```conllu
# sent_id = question:world:70-the-night-sky:e4:o4:1
# text = The stars travel around the Earth
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	stars	star	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	travel	travel	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	around	around	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	Earth	Earth	PROPN	NNP	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **travel** | present | the stars |  |  | the Earth |  |  | vn run-51.3.2-1 «NP V PP.location»: agent=Theme around earth=Trajectory |

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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.

<!-- /div -->

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