---
title: On a timeline of Earth's 4.5 billion years squashed into 24 hours, h… — BC and AD, dinosaurs and pyramids, and timelines · tree and pragmatics
description: On a timeline of Earth's 4.5 billion years squashed into 24 hours, humans appear only about 6 seconds before midnight. Who acts: humans. A sentence of the lesson «BC and AD, dinosaurs and pyramids, and timelines» of the world course of Mova's primary school with its dependency tree and the pragmatic
---

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# BC and AD, dinosaurs and pyramids, and timelines, sentence 22

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On a timeline of Earth's 4.5 billion years squashed into 24 hours, humans appear only about 6 seconds before midnight.

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**Who acts:** humans · **What happens:** squash, appear · **To what, where:** billion years, timeline

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This is a sentence of the lesson «BC and AD, dinosaurs and pyramids, and timelines» 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 (humans), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:125-bc-ad-dinosaurs-pyramids-timelines.lesson:22
# text = On a timeline of Earth's 4.5 billion years squashed into 24 hours, humans appear only about 6 seconds before midnight.
# source = school lesson (ours)
# course = world
# lesson = 125-bc-ad-dinosaurs-pyramids-timelines.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	On	on	ADP	IN	_	3	case	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
3	timeline	timeline	NOUN	NN	Number=Sing	16	obl	_	_
4	of	of	ADP	IN	_	9	case	_	_
5	Earth	Earth	PROPN	NNP	Number=Sing	9	nmod:poss	_	_
6	's	's	PART	POS	_	5	case	_	_
7	4.5	4.5	NUM	CD	NumForm=Digit|NumType=Card	8	compound	_	Agree=R5-strong|Haiku=9:nummod
8	billion	billion	NUM	CD	NumForm=Word|NumType=Card	9	nummod	_	_
9	years	year	NOUN	NNS	Number=Plur	3	nmod	_	_
10	squashed	squash	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	acl	_	_
11	into	into	ADP	IN	_	13	case	_	_
12	24	24	NUM	CD	NumForm=Digit|NumType=Card	13	nummod	_	_
13	hours	hour	NOUN	NNS	Number=Plur	10	obl	_	_
14	,	,	PUNCT	,	_	3	punct	_	_
15	humans	human	NOUN	NNS	Number=Plur	16	nsubj	_	_
16	appear	appear	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
17	only	only	ADV	RB	_	19	advmod	_	_
18	about	about	ADV	RB	_	19	advmod	_	_
19	6	6	NUM	CD	NumForm=Digit|NumType=Card	20	nummod	_	_
20	seconds	second	NOUN	NNS	Number=Plur	16	obl:unmarked	_	_
21	before	before	ADP	IN	_	22	case	_	_
22	midnight	midnight	NOUN	NN	Number=Sing	16	obl	_	Agree=R5-strong|Haiku=20:nmod
23	.	.	PUNCT	.	_	16	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **squash** | participle |  | Earth's billion years *not said here* |  |  | hour |  | vn bump-18.4-1 «NP V together»: agent=Theme |
| 2 | **appear** | present | humans |  |  | a timeline of Earth's billion years | midnight; second |  | vn appear-48.1.1 «NP V PP.location»: agent=Theme on timeline=Location |

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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:125-bc-ad-dinosaurs-pyramids-timelines.lesson:22`.

**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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