---
title: Which is true about the black hole at the centre of our galaxy? — The Milky Way · tree and pragmatics
description: Which is true about the black hole at the centre of our galaxy? Test 7 of lesson 23 «The Milky Way» 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 · The Milky Way

<!-- .ven lang=en -->
Which is true about the black hole at the centre of our galaxy?

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

<!-- .vabout -->
This is test 7 of lesson 23 «The Milky Way» 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/23-the-milky-way/#t7).

## The question {#question}

```conllu
# sent_id = question:space:23-the-milky-way:t7:1
# text = Which is true about the black hole at the centre of our galaxy?
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	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	black	black	ADJ	JJ	Degree=Pos	7	amod	_	_
7	hole	hole	NOUN	NN	Number=Sing	3	obl	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	centre	centre	NOUN	NN	Number=Sing	7	nmod	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	our	our	PRON	PRP$	Case=Gen|Number=Plur|Person=1|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
13	galaxy	galaxy	NOUN	NN	Number=Sing	10	nmod	_	SpaceAfter=No
14	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | about the black hole at the centre of our galaxy; 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 -->
It will swallow the Earth some time next year, bit by bit

```conllu
# sent_id = question:space:23-the-milky-way:t7:o1:1
# text = It will swallow the Earth some time next year, bit by bit
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	will	will	AUX	MD	VerbForm=Fin	3	aux	_	_
3	swallow	swallow	VERB	VB	VerbForm=Inf	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	Earth	Earth	PROPN	NNP	Number=Sing	3	obj	_	_
6	some	some	DET	DT	PronType=Ind	7	det	_	_
7	time	time	NOUN	NN	Number=Sing	3	obl:unmarked	_	_
8	next	next	ADJ	JJ	Degree=Pos	9	amod	_	_
9	year	year	NOUN	NN	Number=Sing	3	obl:unmarked	_	SpaceAfter=No
10	,	,	PUNCT	,	_	11	punct	_	_
11	bit	bit	NOUN	NN	Number=Sing	3	obl	_	_
12	by	by	ADP	IN	_	13	case	_	_
13	bit	bit	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **swallow** | future | It | the Earth |  |  | time; year | by bit; bit *obl* | vn gobble-39.3 «NP V NP»: agent=Agent earth=Patient |

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

<!-- .ven lang=en -->
It is about 4 million times the mass of the Sun

```conllu
# sent_id = question:space:23-the-milky-way:t7:o2:1
# text = It is about 4 million times the mass of the Sun
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
3	about	about	ADV	RB	_	5	advmod	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	compound	_	_
5	million	million	NUM	CD	NumForm=Word|NumType=Card	6	nummod	_	_
6	times	time	NOUN	NNS	Number=Plur	8	obl:unmarked	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	mass	mass	NOUN	NN	Number=Sing	0	root	_	_
9	of	of	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	Sun	Sun	PROPN	NNP	Number=Sing	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | the mass |  |  | time | of the Sun | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
It is only a myth, and there is no evidence for it at all

<!-- fold The tree, 14 words -->
```conllu
# sent_id = question:space:23-the-milky-way:t7:o3:1
# text = It is only a myth, and there is no evidence for it at all
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	only	only	ADV	RB	_	5	advmod	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	myth	myth	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
6	,	,	PUNCT	,	_	9	punct	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	there	there	PRON	EX	PronType=Dem	9	expl	_	_
9	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	parataxis	_	_
10	no	no	DET	DT	PronType=Neg	11	det	_	_
11	evidence	evidence	NOUN	NN	Number=Sing	9	nsubj	_	_
12	for	for	ADP	IN	_	13	case	_	_
13	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nmod	_	_
14	at	at	ADP	IN	_	15	case	_	_
15	all	all	DET	DT	PronType=Tot	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | a myth |  | all |  |  | tree rules |
| 2 | **be** | present | no evidence for myth |  |  | there |  |  | vn exist-47.1 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is about the size and mass of the Earth, only darker

```conllu
# sent_id = question:space:23-the-milky-way:t7:o4:1
# text = It is about the size and mass of the Earth, only darker
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	about	about	ADV	RB	_	5	advmod	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	size	size	NOUN	NN	Number=Sing	0	root	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	mass	mass	NOUN	NN	Number=Sing	5	conj	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	Earth	Earth	PROPN	NNP	Number=Sing	7	nmod	_	SpaceAfter=No
11	,	,	PUNCT	,	_	5	punct	_	_
12	only	only	ADV	RB	_	13	advmod	_	_
13	darker	dark	ADJ	JJR	Degree=Cmp	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | the size and mass of the Earth |  |  |  | about *property* | tree rules |
| 2 | **be** |  |  |  |  |  |  |  | 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.

<!-- /div -->

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- ← previous: [The Milky Way, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/space/23-the-milky-way/t6/)
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