---
title: Pluto's biggest moon Charon is about half Pluto's width, so the two… — Pluto, the Kuiper belt, the Oort cloud and comets · tree and pragmatics
description: Pluto's biggest moon Charon is about half Pluto's width, so the two orbit a point between them, almost like a double planet. Who acts: biggest moon, two. 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
---

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# Pluto, the Kuiper belt, the Oort cloud and comets, sentence 8

<!-- .ven lang=en -->
Pluto's biggest moon Charon is about half Pluto's width, so the two orbit a point between them, almost like a double planet.

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**Who acts:** biggest moon, two · **What happens:** be, orbit · **To what, where:** half width, point

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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 (biggest moon, two), 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:8
# text = Pluto's biggest moon Charon is about half Pluto's width, so the two orbit a point between them, almost like a double planet.
# 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): R5-strong ×1
1	Pluto	Pluto	PROPN	NNP	Number=Sing	4	nmod:poss	_	_
2	's	's	PART	POS	_	1	case	_	_
3	biggest	big	ADJ	JJS	Degree=Sup	4	amod	_	_
4	moon	moon	NOUN	NN	Number=Sing	11	nsubj	_	_
5	Charon	Charon	PROPN	NNP	Number=Sing	4	appos	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	cop	_	_
7	about	about	ADV	RB	_	8	advmod	_	_
8	half	half	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Frac	11	amod	_	_
9	Pluto	Pluto	PROPN	NNP	Number=Sing	11	nmod:poss	_	_
10	's	's	PART	POS	_	9	case	_	_
11	width	width	NOUN	NN	Number=Sing	0	root	_	_
12	,	,	PUNCT	,	_	16	punct	_	_
13	so	so	ADV	RB	_	16	advmod	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	two	two	NUM	CD	NumForm=Word|NumType=Card	16	nsubj	_	_
16	orbit	orbit	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	parataxis	_	_
17	a	a	DET	DT	Definite=Ind|PronType=Art	18	det	_	_
18	point	point	NOUN	NN	Number=Sing	16	obj	_	_
19	between	between	ADP	IN	_	20	case	_	_
20	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	18	nmod	_	_
21	,	,	PUNCT	,	_	26	punct	_	_
22	almost	almost	ADV	RB	_	26	advmod	_	_
23	like	like	ADP	IN	_	26	case	_	_
24	a	a	DET	DT	Definite=Ind|PronType=Art	26	det	_	_
25	double	double	ADJ	JJ	Degree=Pos	26	amod	_	_
26	planet	planet	NOUN	NN	Number=Sing	16	obl	_	Agree=R5-strong|Haiku=18:appos
27	.	.	PUNCT	.	_	11	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 | **is a** | present | Pluto's biggest moon | Pluto's half width |  |  |  |  | tree rules |
| 2 | **orbit** | present | the two | a point |  |  |  | between objects *= object*; like a double planet | 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:8`.

**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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