---
title: Without air, a feather and a hammer fall equally fast: an astronaut… — Gravity · tree and pragmatics
description: Without air, a feather and a hammer fall equally fast: an astronaut tried it on the Moon, and both reached the ground together. Who acts: astronaut, both. A sentence of the lesson «Gravity» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Gravity, sentence 4

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Without air, a feather and a hammer fall equally fast: an astronaut tried it on the Moon, and both reached the ground together.

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**Who acts:** astronaut, both · **What happens:** try, reach · **To what, where:** Gravity, Moon, ground

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This is a sentence of the lesson «Gravity» of the world 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 (astronaut, both), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:006-gravity.lesson:4
# text = Without air, a feather and a hammer fall equally fast: an astronaut tried it on the Moon, and both reached the ground together.
# source = school lesson (ours)
# course = world
# lesson = 006-gravity.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 ×3, R8-pos-agree ×1
1	Without	without	ADP	IN	_	2	case	_	_
2	air	air	NOUN	NN	Number=Sing	9	obl	_	Agree=R5-strong|Haiku=11:obl
3	,	,	PUNCT	,	_	2	punct	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	feather	feather	NOUN	NN	Number=Sing	11	nsubj	_	_
6	and	and	CCONJ	CC	_	9	cc	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	Agree=R5-strong|Haiku=9:det
8	hammer	hammer	NOUN	NN	Number=Sing	5	conj	_	Agree=R5-strong|Haiku=9:compound
9	fall	fall	NOUN	NN	Number=Sing	5	conj	_	_
10	equally	equally	ADV	RB	_	11	advmod	_	_
11	fast	fast	ADJ	JJ	Degree=Pos	0	root	_	_
12	:	:	PUNCT	:	_	11	punct	_	_
13	an	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
14	astronaut	astronaut	NOUN	NN	Number=Sing	15	nsubj	_	_
15	tried	try	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	11	conj	_	_
16	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	15	obj	_	_
17	on	on	ADP	IN	_	19	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	Moon	Moon	PROPN	NNP	Number=Sing	15	obl	_	_
20	,	,	PUNCT	,	_	23	punct	_	_
21	and	and	CCONJ	CC	_	23	cc	_	_
22	both	both	DET	DT	PronType=Tot	23	nsubj	_	Agree=R8-pos-agree|Haiku=23:nsubj|HaikuPos=PRON:DT:PronType=Tot
23	reached	reach	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	15	conj	_	_
24	the	the	DET	DT	Definite=Def|PronType=Art	25	det	_	_
25	ground	ground	NOUN	NN	Number=Sing	23	obj	_	_
26	together	together	ADV	RB	_	23	advmod	_	_
27	.	.	PUNCT	.	_	11	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **try** | past | a astronaut | Gravity |  | the Moon |  |  | vn try-61.1 «NP V NP»: agent=Agent it=Eventuality |
| 2 | **reach** | past | both | the ground |  |  |  | together *property* | vn body\_motion-49.2-1-1 «NP V NP ADV»: agent=Agent ground=Theme |

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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:world:006-gravity.lesson:4`.

**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 ×3, 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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