---
title: Why could the Sun not simply turn into a black hole one day? — Black holes · tree and pragmatics
description: Why could the Sun not simply turn into a black hole one day? Test 7 · ★★ of lesson 25 «Black holes» of the space 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 7 · ★★ · Black holes

<!-- .ven lang=en -->
Why could the Sun not simply turn into a black hole one day?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 1 · wrong ✗ · **Who acts:** Sun · **What happens:** not turn · **To what, where:** black hole

<!-- .vabout -->
This is test 7 · ★★ of lesson 25 «Black holes» of the space 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/space/25-black-holes/#t7).

## The question {#question}

```conllu
# sent_id = question:space:25-black-holes:t7:1
# text = Why could the Sun not simply turn into a black hole one day?
1	Why	why	ADV	WRB	PronType=Int	7	advmod	_	_
2	could	could	AUX	MD	VerbForm=Fin	7	aux	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	Sun	Sun	PROPN	NNP	Number=Sing	7	nsubj	_	_
5	not	not	PART	RB	Polarity=Neg	7	advmod	_	_
6	simply	simply	ADV	RB	_	7	advmod	_	_
7	turn	turn	VERB	VB	VerbForm=Inf	0	root	_	_
8	into	into	ADP	IN	_	11	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	black	black	ADJ	JJ	Degree=Pos	11	amod	_	_
11	hole	hole	NOUN	NN	Number=Sing	7	obl	_	_
12	one	one	NUM	CD	NumForm=Word|NumType=Card	13	nummod	_	_
13	day	day	NOUN	NN	Number=Sing	7	obl:unmarked	_	SpaceAfter=No
14	?	?	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **turn** | could | the Sun |  |  | a black hole | day | simply *property* | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme into hole=Trajectory |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
It is not heavy enough to collapse into one

```conllu
# sent_id = question:space:25-black-holes:t7:o1:1
# text = It is not heavy enough to collapse into one
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	heavy	heavy	ADJ	JJ	Degree=Pos	0	root	_	_
5	enough	enough	ADV	RB	_	4	advmod	_	_
6	to	to	PART	TO	_	7	mark	_	_
7	collapse	collapse	VERB	VB	VerbForm=Inf	4	advcl	_	_
8	into	into	ADP	IN	_	9	case	_	_
9	one	one	NUM	CD	NumForm=Word|NumType=Card	7	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **is** | present | It |  |  |  |  | enough, heavy *property* | tree rules |
| 2 | **collapse** | to-infinitive |  |  |  |  |  | into one | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
It is made of the wrong kind of gas

```conllu
# sent_id = question:space:25-black-holes:t7:o2:1
# text = It is made of the wrong kind of gas
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	wrong	wrong	ADJ	JJ	Degree=Pos	7	amod	_	_
7	kind	kind	NOUN	NN	Number=Sing	3	obl	_	_
8	of	of	ADP	IN	_	9	case	_	_
9	gas	gas	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | It |  |  |  | of the wrong kind of gas | vn build-26.1-1 «NP.asset V NP»: subject=Product |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is too far from the galaxy's centre

```conllu
# sent_id = question:space:25-black-holes:t7:o3:1
# text = It is too far from the galaxy's centre
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
3	too	too	ADV	RB	_	4	advmod	_	_
4	far	far	ADV	RB	Degree=Pos	9	advmod	_	_
5	from	from	ADP	IN	_	9	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	galaxy	galaxy	NOUN	NN	Number=Sing	9	nmod:poss	_	SpaceAfter=No
8	's	's	PART	POS	_	7	case	_	_
9	centre	centre	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  | the galaxy's centre |  | far *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
It burns too slowly

```conllu
# sent_id = question:space:25-black-holes:t7:o4:1
# text = It burns too slowly
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	burns	burn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	too	too	ADV	RB	_	2	advmod	_	_
4	slowly	slowly	ADV	RB	_	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **burn** | present | It |  |  |  |  | slowly *property* | vn light\_emission-43.1 «NP V»: agent=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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- ← previous: [Black holes, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/space/25-black-holes/t6/)
- next →: [Black holes, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/space/25-black-holes/t8/)
- ↑ back to [Black holes](https://md.mova.elamur.ai/free/en/corpora/questions/space/25-black-holes/)