---
title: Ascertain the approximate period which has elapsed since the extinct… — Dinosaurs and life long ago · tree and pragmatics
description: Ascertain the approximate period which has elapsed since the extinction of the dinosaurs. Exam question 1 of lesson 78 «Dinosaurs and life long ago» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Exam question 1 · Dinosaurs and life long ago

<!-- .ven lang=en -->
Ascertain the approximate period which has elapsed since the extinction of the dinosaurs.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** ascertain, elapse, extinguish · **To what, where:** approximate period, dinosaurs

<!-- .vabout -->
This is exam question 1 of lesson 78 «Dinosaurs and life long ago» of the world course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/world/78-dinosaurs-and-life-long-ago/#e1).

## The question {#question}

```conllu
# sent_id = question:world:78-dinosaurs-and-life-long-ago:e1:1
# text = Ascertain the approximate period which has elapsed since the extinction of the dinosaurs.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	approximate	approximate	ADJ	JJ	Degree=Pos	4	amod	_	_
4	period	period	NOUN	NN	Number=Sing	1	obj	_	_
5	which	which	PRON	WDT	PronType=Rel	7	nsubj:pass	_	_
6	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	aux	_	_
7	elapsed	elapse	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	_
8	since	since	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	extinction	extinction	NOUN	NN	Number=Sing	7	obl	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	dinosaurs	dinosaur	NOUN	NNS	Number=Plur	10	nmod	_	SpaceAfter=No
14	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the approximate period |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent period=Topic |
| 2 | **elapse** | present · perfect · passive |  | the approximate period |  |  | since the extinction of the dinosaurs |  | tree rules |
| 3 | **extinguish** |  |  | the dinosaurs |  |  |  |  | nom extinction «state transitive»: of=patient |

<!-- .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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
About 66 thousand years

```conllu
# sent_id = question:world:78-dinosaurs-and-life-long-ago:e1:o1:1
# text = About 66 thousand years
1	About	about	ADV	RB	_	3	advmod	_	_
2	66	66	NUM	CD	NumForm=Digit|NumType=Card	3	compound	_	_
3	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
About 660 million years

```conllu
# sent_id = question:world:78-dinosaurs-and-life-long-ago:e1:o2:1
# text = About 660 million years
1	About	about	ADV	RB	_	3	advmod	_	_
2	660	660	NUM	CD	NumForm=Digit|NumType=Card	3	compound	_	_
3	million	million	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
About 66 million years

```conllu
# sent_id = question:world:78-dinosaurs-and-life-long-ago:e1:o3:1
# text = About 66 million years
1	About	about	ADV	RB	_	3	advmod	_	_
2	66	66	NUM	CD	NumForm=Digit|NumType=Card	3	compound	_	_
3	million	million	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
About 6 million years

```conllu
# sent_id = question:world:78-dinosaurs-and-life-long-ago:e1:o4:1
# text = About 6 million years
1	About	about	ADV	RB	_	3	advmod	_	_
2	6	6	NUM	CD	NumForm=Digit|NumType=Card	3	compound	_	_
3	million	million	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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