---
title: Before fusion starts, a young star is a protostar, glowing from the… — How stars live · tree and pragmatics
description: Before fusion starts, a young star is a protostar, glowing from the heat of its own collapse and hidden in dust. Who acts: fusion, young star, protostar, own collapse. A sentence of the lesson «How stars live» of the space course of Mova's primary school with its dependency tree and the pragmatics o
---

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# How stars live, sentence 6

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Before fusion starts, a young star is a protostar, glowing from the heat of its own collapse and hidden in dust.

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**Who acts:** fusion, young star, protostar, own collapse · **What happens:** start, be, glow, hide, heat, collapse · **To what, where:** protostar, heat, dust

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This is a sentence of the lesson «How stars live» 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 (fusion, young star, protostar, own collapse), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:018-how-stars-live.lesson:6
# text = Before fusion starts, a young star is a protostar, glowing from the heat of its own collapse and hidden in dust.
# source = school lesson (ours)
# course = space
# lesson = 018-how-stars-live.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): no change
1	Before	before	SCONJ	IN	_	3	mark	_	_
2	fusion	fusion	NOUN	NN	Number=Sing	3	nsubj	_	_
3	starts	start	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	advcl	_	_
4	,	,	PUNCT	,	_	3	punct	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	young	young	ADJ	JJ	Degree=Pos	7	amod	_	_
7	star	star	NOUN	NN	Number=Sing	10	nsubj	_	_
8	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	cop	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	protostar	protostar	NOUN	NN	Number=Sing	0	root	_	_
11	,	,	PUNCT	,	_	12	punct	_	_
12	glowing	glow	VERB	VBG	VerbForm=Ger	10	acl	_	_
13	from	from	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	heat	heat	NOUN	NN	Number=Sing	12	obl	_	_
16	of	of	ADP	IN	_	19	case	_	_
17	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	19	nmod:poss	_	_
18	own	own	ADJ	JJ	Degree=Pos	19	amod	_	_
19	collapse	collapse	NOUN	NN	Number=Sing	15	nmod	_	_
20	and	and	CCONJ	CC	_	21	cc	_	_
21	hidden	hide	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	12	conj	_	_
22	in	in	ADP	IN	_	23	case	_	_
23	dust	dust	NOUN	NN	Number=Sing	21	obl	_	_
24	.	.	PUNCT	.	_	10	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **start** | present | fusion |  |  |  |  |  | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |
| 2 | **is a** | present | a young star | a protostar |  |  |  |  | tree rules |
| 3 | **glow** | gerund | a protostar *not said here* |  |  | the heat of fusion's own collapse |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |
| 4 | **hide** | participle | a protostar *not said here* |  |  | dust |  |  | vn concealment-16-1 «NP V PP.location»: agent=Agent in dust=Location |
| 5 | **heat** |  | fusion's own collapse |  |  |  |  |  | nom heat «phenomenon intransitive»: of=agent |
| 6 | **collapse** |  | fusion |  |  |  |  |  | nom collapse «state intransitive»: poss=agent |

<!-- .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:018-how-stars-live.lesson:6`.

**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): no change. **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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