---
title: Most large galaxies have a supermassive black hole at their centre,… — Black holes · tree and pragmatics
description: Most large galaxies have a supermassive black hole at their centre, millions to billions of times the mass of the Sun. Who acts: Most large galaxies. A sentence of the lesson «Black holes» of the space course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Black holes, sentence 9

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Most large galaxies have a supermassive black hole at their centre, millions to billions of times the mass of the Sun.

<!-- .vintro -->
**Who acts:** Most large galaxies · **What happens:** have · **To what, where:** supermassive black hole, centre

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This is a sentence of the lesson «Black holes» of the space course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Most large galaxies), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:025-black-holes.lesson:9
# text = Most large galaxies have a supermassive black hole at their centre, millions to billions of times the mass of the Sun.
# source = school lesson (ours)
# course = space
# lesson = 025-black-holes.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1
1	Most	most	ADJ	JJS	Degree=Sup	3	amod	_	_
2	large	large	ADJ	JJ	Degree=Pos	3	amod	_	_
3	galaxies	galaxy	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
6	supermassive	supermassive	ADJ	JJ	Degree=Pos	8	amod	_	_
7	black	black	ADJ	JJ	Degree=Pos	8	amod	_	_
8	hole	hole	NOUN	NN	Number=Sing	4	obj	_	_
9	at	at	ADP	IN	_	11	case	_	_
10	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	centre	centre	NOUN	NN	Number=Sing	4	obl	_	Agree=R5-strong|Haiku=8:nmod
12	,	,	PUNCT	,	_	13	punct	_	_
13	millions	million	NOUN	NNS	Number=Plur	8	nmod	_	_
14	to	to	ADP	IN	_	15	case	_	_
15	billions	billion	NOUN	NNS	Number=Plur	13	nmod	_	_
16	of	of	ADP	IN	_	17	case	_	_
17	times	time	NOUN	NNS	Number=Plur	15	nmod	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	mass	mass	NOUN	NN	Number=Sing	8	conj	_	_
20	of	of	ADP	IN	_	22	case	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	Sun.	Sun	PROPN	NNP	Number=Sing	19	nmod	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Most large galaxies | a supermassive black hole  millions to billions of times and the mass of the Sun. |  | galaxies's centre |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent hole=Patient |

<!-- .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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:space:025-black-holes.lesson:9`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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