---
title: If Earth's 4.5 billion years were one day, dinosaurs would arrive at… — How old is it? Rock layers, rock clocks, amber a… · tree and pragmatics
description: If Earth's 4.5 billion years were one day, dinosaurs would arrive at about 10.40 at night, vanish at about 11.40, and humans would appear a few seconds before midnight. Who acts: billion years, dinosaurs, humans. A sentence of the lesson «How old is it? Rock layers, rock clocks, amber and the long s
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/9/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [How old is it? Rock layers, rock clock…](https://md.mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/) / 9

# How old is it? Rock layers, rock clocks, amber and the long story of life, sentence 9

<!-- .ven lang=en -->
If Earth's 4.5 billion years were one day, dinosaurs would arrive at about 10.40 at night, vanish at about 11.40, and humans would appear a few seconds before midnight.

<!-- .vintro -->
**Who acts:** billion years, dinosaurs, humans · **What happens:** be, arrive, vanish, appear · **To what, where:** one day, 10.40, 11.40

<!-- .vabout -->
This is a sentence of the lesson «How old is it? Rock layers, rock clocks, amber and the long story of life» of the biology 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 (billion years, dinosaurs, humans), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life.lesson:9
# text = If Earth's 4.5 billion years were one day, dinosaurs would arrive at about 10.40 at night, vanish at about 11.40, and humans would appear a few seconds before midnight.
# source = school lesson (ours)
# course = biology
# lesson = 276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life.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): no change
1	If	if	SCONJ	IN	_	9	mark	_	_
2	Earth	Earth	PROPN	NNP	Number=Sing	6	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	4.5	4.5	NUM	CD	NumForm=Digit|NumType=Frac	5	compound	_	_
5	billion	billion	NUM	CD	NumForm=Word|NumType=Card	6	nummod	_	_
6	years	year	NOUN	NNS	Number=Plur	9	nsubj	_	_
7	were	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	cop	_	_
8	one	one	NUM	CD	NumForm=Word|NumType=Card	9	nummod	_	_
9	day	day	NOUN	NN	Number=Sing	13	advcl	_	_
10	,	,	PUNCT	,	_	9	punct	_	_
11	dinosaurs	dinosaur	NOUN	NNS	Number=Plur	13	nsubj	_	_
12	would	would	AUX	MD	VerbForm=Fin	13	aux	_	_
13	arrive	arrive	VERB	VB	VerbForm=Inf	0	root	_	_
14	at	at	ADP	IN	_	16	case	_	_
15	about	about	ADV	RB	_	16	advmod	_	_
16	10.40	10.40	NUM	CD	NumForm=Digit|NumType=Card	13	obl	_	_
17	at	at	ADP	IN	_	18	case	_	_
18	night	night	NOUN	NN	Number=Sing	16	nmod	_	_
19	,	,	PUNCT	,	_	20	punct	_	_
20	vanish	vanish	VERB	VB	VerbForm=Inf	13	conj	_	_
21	at	at	ADP	IN	_	23	case	_	_
22	about	about	ADV	RB	_	23	advmod	_	_
23	11.40	11.40	NUM	CD	NumForm=Digit|NumType=Card	20	obl	_	_
24	,	,	PUNCT	,	_	28	punct	_	_
25	and	and	CCONJ	CC	_	28	cc	_	_
26	humans	human	NOUN	NNS	Number=Plur	28	nsubj	_	_
27	would	would	AUX	MD	VerbForm=Fin	28	aux	_	_
28	appear	appear	VERB	VB	VerbForm=Inf	13	conj	_	_
29	a	a	DET	DT	Definite=Ind|PronType=Art	31	det	_	_
30	few	few	ADJ	JJ	Degree=Pos	31	amod	_	_
31	seconds	second	NOUN	NNS	Number=Plur	28	obj	_	_
32	before	before	ADP	IN	_	33	case	_	_
33	midnight	midnight	NOUN	NN	Number=Sing	28	obl	_	_
34	.	.	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 | **is a** *a condition, not said to happen* | past | Earth's billion years | one day |  |  |  |  | tree rules |
| 2 | **arrive** | would | dinosaurs |  |  | 10.40 at night |  |  | vn escape-51.1-1 «NP V»: agent=Theme |
| 3 | **vanish** | infinitive | dinosaurs *not said here* |  |  | 11.40 |  |  | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 4 | **appear** | would | humans |  |  |  | midnight; second |  | vn appear-48.1.1 «NP V»: agent=Theme |

<!-- .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.

<!-- div src -->

**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:biology:276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life.lesson:9`.

**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): no change. **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/).

<!-- /div -->

<!-- pn -->
- ← previous: [How old is it? Rock layers, rock clock…, 8](https://md.mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/8/)
- next →: [How old is it? Rock layers, rock clock…, 10](https://md.mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/10/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/)

