---
title: Then it gently puffs off its outer layers as a glowing shell, a plan… — How stars die · tree and pragmatics
description: Then it gently puffs off its outer layers as a glowing shell, a planetary nebula, and what is left is a white dwarf: about the size of the Earth but so packed that a teaspoon of it would weigh more than a car. Who acts: Sun, teaspoon. A sentence of the lesson «How stars die» of the space course of M
---

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# How stars die, sentence 1

<!-- .ven lang=en -->
Then it gently puffs off its outer layers as a glowing shell, a planetary nebula, and what is left is a white dwarf: about the size of the Earth but so packed that a teaspoon of it would weigh more than a car.

<!-- .vintro -->
**Who acts:** Sun, teaspoon · **What happens:** puff off, glow, leave, be, pack, weigh · **To what, where:** outer layers, white dwarf, more

<!-- .vabout -->
This is a sentence of the lesson «How stars die» 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 (Sun, teaspoon), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:019-how-stars-die.lesson:1
# text = Then it gently puffs off its outer layers as a glowing shell, a planetary nebula, and what is left is a white dwarf: about the size of the Earth but so packed that a teaspoon of it would weigh more than a car.
# source = school lesson (ours)
# course = space
# lesson = 019-how-stars-die.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): R7-rel-agree ×4
1	Then	then	ADV	RB	PronType=Dem	4	advmod	_	_
2	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
3	gently	gently	ADV	RB	_	4	advmod	_	_
4	puffs	puff	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	off	off	ADP	RP	_	4	compound:prt	_	_
6	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
7	outer	outer	ADJ	JJ	Degree=Pos	8	amod	_	_
8	layers	layer	NOUN	NNS	Number=Plur	4	obj	_	_
9	as	as	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	glowing	glow	VERB	VBG	VerbForm=Ger	12	amod	_	_
12	shell	shell	NOUN	NN	Number=Sing	4	obl	_	_
13	,	,	PUNCT	,	_	16	punct	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	16	det	_	_
15	planetary	planetary	ADJ	JJ	Degree=Pos	16	amod	_	Agree=R7-rel-agree|Haiku=16:compound|HaikuPos=NOUN:NN:Number=Sing
16	nebula	nebula	NOUN	NN	Number=Sing	12	appos	_	_
17	,	,	PUNCT	,	_	25	punct	_	_
18	and	and	CCONJ	CC	_	25	cc	_	_
19	what	what	PRON	WP	PronType=Int	25	nsubj	_	_
20	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	21	aux:pass	_	_
21	left	leave	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	19	acl:relcl	_	_
22	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	25	cop	_	_
23	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	_	_
24	white	white	ADJ	JJ	Degree=Pos	25	amod	_	_
25	dwarf	dwarf	NOUN	NN	Number=Sing	4	conj	_	Agree=R7-rel-agree|Haiku=4:obl
26	:	:	PUNCT	:	_	29	punct	_	_
27	about	about	ADV	RB	_	29	advmod	_	Agree=R7-rel-agree|Haiku=29:case|HaikuPos=ADP:IN:_
28	the	the	DET	DT	Definite=Def|PronType=Art	29	det	_	_
29	size	size	NOUN	NN	Number=Sing	25	appos	_	Agree=R7-rel-agree|Haiku=25:conj
30	of	of	ADP	IN	_	32	case	_	_
31	the	the	DET	DT	Definite=Def|PronType=Art	32	det	_	_
32	Earth	Earth	PROPN	NNP	Number=Sing	29	nmod	_	_
33	but	but	CCONJ	CC	_	35	cc	_	_
34	so	so	ADV	RB	_	35	advmod	_	_
35	packed	pack	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	conj	_	_
36	that	that	SCONJ	IN	_	42	mark	_	_
37	a	a	DET	DT	Definite=Ind|PronType=Art	38	det	_	_
38	teaspoon	teaspoon	NOUN	NN	Number=Sing	42	nsubj	_	_
39	of	of	ADP	IN	_	40	case	_	_
40	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	38	nmod	_	_
41	would	would	AUX	MD	VerbForm=Fin	42	aux	_	_
42	weigh	weigh	VERB	VB	VerbForm=Inf	35	ccomp	_	_
43	more	more	ADJ	JJR	Degree=Cmp	42	obj	_	_
44	than	than	ADP	IN	_	46	case	_	_
45	a	a	DET	DT	Definite=Ind|PronType=Art	46	det	_	_
46	car	car	NOUN	NN	Number=Sing	43	obl	_	_
47	.	.	PUNCT	.	_	4	punct	_	_
```

## 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 | **puff off** | present | Sun | Sun's outer layers |  |  | then | as a glowing shell; gently *property* | vn substance\_emission-43.4-1 «PP.location V NP»: agent=Location layer=Source |
| 2 | **glow** | gerund |  |  |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |
| 3 | **leave** | present · passive |  |  |  |  |  |  | vn escape-51.1-1-1 «NP V» |
| 4 | **is a** | present |  | a white dwarf |  |  |  |  | tree rules |
| 5 | **pack** | past | Sun *not said here* |  |  |  |  |  | tree rules |
| 6 | **weigh** | would | a teaspoon of Sun | more |  |  |  |  | vn register-54.1-2-1 «NP V NP.value»: agent=Theme more=Value |

<!-- .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:019-how-stars-die.lesson:1`.

**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): R7-rel-agree ×4. **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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