---
title: In 1967 Jocelyn Bell Burnell, a student from Northern Ireland, disco… — How stars die · tree and pragmatics
description: In 1967 Jocelyn Bell Burnell, a student from Northern Ireland, discovered pulsars, spinning neutron stars that sweep beams of radio waves past the Earth like a lighthouse. Who acts: Jocelyn, pulsars, neutron stars. A sentence of the lesson «How stars die» of the space course of Mova's primary school
---

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# How stars die, sentence 13

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In 1967 Jocelyn Bell Burnell, a student from Northern Ireland, discovered pulsars, spinning neutron stars that sweep beams of radio waves past the Earth like a lighthouse.

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**Who acts:** Jocelyn, pulsars, neutron stars · **What happens:** discover, spin, sweep, beam · **To what, where:** pulsars, 1967, neutron stars, beams, Earth, radio waves

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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 (Jocelyn, pulsars, neutron stars), 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:13
# text = In 1967 Jocelyn Bell Burnell, a student from Northern Ireland, discovered pulsars, spinning neutron stars that sweep beams of radio waves past the Earth like a lighthouse.
# 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): R5-strong ×2
1	In	in	ADP	IN	_	2	case	_	_
2	1967	1967	NUM	CD	NumForm=Digit|NumType=Card	13	obl	_	_
3	Jocelyn	Jocelyn	PROPN	NNP	Number=Sing	13	nsubj	_	_
4	Bell	bell	NOUN	NN	Number=Sing	3	flat	_	_
5	Burnell	Burnell	PROPN	NNP	Number=Sing	3	flat	_	_
6	,	,	PUNCT	,	_	8	punct	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	student	student	NOUN	NN	Number=Sing	3	appos	_	_
9	from	from	ADP	IN	_	11	case	_	_
10	Northern	Northern	PROPN	NNP	Number=Sing	11	flat	_	_
11	Ireland	Ireland	PROPN	NNP	Number=Sing	8	nmod	_	_
12	,	,	PUNCT	,	_	14	punct	_	_
13	discovered	discover	VERB	VBD	Mood=Ind|Tense=Past|VerbForm=Fin	0	root	_	_
14	pulsars	pulsar	NOUN	NNS	Number=Plur	13	obj	_	_
15	,	,	PUNCT	,	_	16	punct	_	_
16	spinning	spin	VERB	VBG	Tense=Pres|VerbForm=Part	14	acl	_	_
17	neutron	neutron	NOUN	NN	Number=Sing	18	compound	_	_
18	stars	star	NOUN	NNS	Number=Plur	16	obj	_	_
19	that	that	PRON	WDT	PronType=Rel	20	nsubj	_	_
20	sweep	sweep	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	18	acl:relcl	_	_
21	beams	beam	NOUN	NNS	Number=Plur	20	obj	_	_
22	of	of	ADP	IN	_	24	case	_	_
23	radio	radio	NOUN	NN	Number=Sing	24	compound	_	_
24	waves	wave	NOUN	NNS	Number=Plur	21	nmod	_	_
25	past	past	ADP	IN	_	27	case	_	_
26	the	the	DET	DT	Definite=Def|PronType=Art	27	det	_	_
27	Earth	Earth	PROPN	NNP	Number=Sing	20	obl	_	Agree=R5-strong|Haiku=24:nmod|HaikuPos=NOUN:NN:Number=Sing
28	like	like	ADP	IN	_	30	case	_	_
29	a	a	DET	DT	Definite=Ind|PronType=Art	30	det	_	_
30	lighthouse	lighthouse	NOUN	NN	Number=Sing	20	obl	_	Agree=R5-strong|Haiku=27:nmod
31	.	.	PUNCT	.	_	13	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 | **discover** | past | Jocelyn | pulsars |  | 1967 |  |  | vn discover-84-1 «NP V NP»: agent=Agent pulsar=Topic |
| 2 | **spin** | gerund | pulsars *not said here* | neutron stars |  |  |  |  | vn roll-51.3.1 «NP V NP.theme»: agent=Agent star=Theme |
| 3 | **sweep** | present | neutron stars | beams of radio waves |  | the Earth |  | like a lighthouse | vn funnel-9.3-1-1 «NP V NP PP.trajectory»: agent=Agent beam=Theme past earth=Trajectory |
| 4 | **beam** |  |  | radio waves |  |  |  |  | nom beam «communication transitive»: of=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:019-how-stars-die.lesson:13`.

**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 ×2. **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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