---
title: Halley's Comet returns about every 76 years; it last came in 1986 an… — Pluto, the Kuiper belt, the Oort cloud and comets · tree and pragmatics
description: Halley's Comet returns about every 76 years; it last came in 1986 and will next be bright in 2061. Who acts: Comet, Sun. A sentence of the lesson «Pluto, the Kuiper belt, the Oort cloud and comets» of the space course of Mova's primary school with its dependency tree and the pragmatics of every clau
---

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# Pluto, the Kuiper belt, the Oort cloud and comets, sentence 14

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Halley's Comet returns about every 76 years; it last came in 1986 and will next be bright in 2061.

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**Who acts:** Comet, Sun · **What happens:** return, come, be · **To what, where:** 1986, 2061

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This is a sentence of the lesson «Pluto, the Kuiper belt, the Oort cloud and comets» 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 (Comet, Sun), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:015-pluto-the-kuiper-belt-the-oort-cloud-and-comets.lesson:14
# text = Halley's Comet returns about every 76 years; it last came in 1986 and will next be bright in 2061.
# source = school lesson (ours)
# course = space
# lesson = 015-pluto-the-kuiper-belt-the-oort-cloud-and-comets.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): R8-pos-agree ×1
1	Halley	Halley	PROPN	NNP	Number=Sing	3	nmod:poss	_	_
2	's	's	PART	POS	_	1	case	_	_
3	Comet	comet	PROPN	NNP	Number=Sing	4	nsubj	_	Agree=R8-pos-agree|Haiku=4:nsubj|HaikuPos=NOUN:NN:Number=Sing
4	returns	return	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	about	about	ADV	RB	_	7	advmod	_	_
6	every	every	DET	DT	PronType=Tot	7	det	_	_
7	76	76	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	years	year	NOUN	NNS	Number=Plur	4	obl:unmarked	_	_
9	;	;	PUNCT	,	_	11	punct	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
11	last	last	ADV	RB	_	12	advmod	_	_
12	came	come	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	parataxis	_	_
13	in	in	ADP	IN	_	14	case	_	_
14	1986	1986	NUM	CD	NumForm=Digit|NumType=Card	12	obl	_	_
15	and	and	CCONJ	CC	_	19	cc	_	_
16	will	will	AUX	MD	VerbForm=Fin	19	aux	_	_
17	next	next	ADV	RB	_	19	advmod	_	_
18	be	be	AUX	VB	VerbForm=Inf	19	cop	_	_
19	bright	bright	ADJ	JJ	Degree=Pos	12	conj	_	_
20	in	in	ADP	IN	_	21	case	_	_
21	2061	2061	NUM	CD	NumForm=Digit|NumType=Card	19	obl	_	_
22	.	.	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 | **return** | present | Halley's Comet |  |  |  | year |  | vn escape-51.1-1 «NP V»: agent=Theme |
| 2 | **come** | past | Sun |  |  | 1986 |  | last *property* | vn appear-48.1.1 «NP V PP.location»: agent=Theme in 1986=Location |
| 3 | **is** | future | Sun *not said here* |  |  | 2061 |  | bright, next *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.

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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:015-pluto-the-kuiper-belt-the-oort-cloud-and-comets.lesson:14`.

**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): R8-pos-agree ×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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