---
title: Identify the principal purpose for which the teeth of Tyrannosaurus… — Tyrannosaurus rex: what we really know… · tree and pragmatics
description: Identify the principal purpose for which the teeth of Tyrannosaurus rex were adapted. Exam question 1 of lesson 265 «Tyrannosaurus rex: what we really know, from teeth and dung to tiny arms» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and o
---

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# Exam question 1 · Tyrannosaurus rex: what we really know, from teeth and dun…

<!-- .ven lang=en -->
Identify the principal purpose for which the teeth of Tyrannosaurus rex were adapted.

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** you · **What happens:** identify, adapt · **To what, where:** principal purpose, teeth

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This is exam question 1 of lesson 265 «Tyrannosaurus rex: what we really know, from teeth and dung to tiny arms» of the biology 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/biology/265-tyrannosaurus-rex-teeth-dung-and-tiny-arms/#e1).

## The question {#question}

```conllu
# sent_id = question:biology:265-tyrannosaurus-rex-teeth-dung-and-tiny-arms:e1:1
# text = Identify the principal purpose for which the teeth of Tyrannosaurus rex were adapted.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	purpose	purpose	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	PRON	WDT	PronType=Rel	13	obl	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	teeth	tooth	NOUN	NNS	Number=Plur	13	nsubj:pass	_	_
9	of	of	ADP	IN	_	11	case	_	_
10	Tyrannosaurus	Tyrannosaurus	PROPN	NNP	Number=Sing	11	compound	_	_
11	rex	rex	PROPN	NNP	Number=Sing	8	nmod	_	_
12	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	13	aux:pass	_	_
13	adapted	adapt	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	SpaceAfter=No
14	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal purpose |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent purpose=Theme |
| 2 | **adapt** | past · passive |  | the teeth of Tyrannosaurus rex |  |  |  | for the principal purpose | vn adjust-26.9 «NP V NP»: subject=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 {#o1}

<!-- .ven lang=en -->
The grinding of vegetation

```conllu
# sent_id = question:biology:265-tyrannosaurus-rex-teeth-dung-and-tiny-arms:e1:o1:1
# text = The grinding of vegetation
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	grinding	grinding	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	vegetation	vegetation	NOUN	NN	Number=Sing	2	nmod	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
The cracking of seeds and nuts

```conllu
# sent_id = question:biology:265-tyrannosaurus-rex-teeth-dung-and-tiny-arms:e1:o2:1
# text = The cracking of seeds and nuts
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	cracking	cracking	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	seeds	seed	NOUN	NNS	Number=Plur	2	nmod	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	nuts	nut	NOUN	NNS	Number=Plur	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **crack** |  | seeds and nuts |  |  |  |  |  | nom cracking «event intransitive»: of=agent |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The crushing of bone and the tearing of flesh

```conllu
# sent_id = question:biology:265-tyrannosaurus-rex-teeth-dung-and-tiny-arms:e1:o3:1
# text = The crushing of bone and the tearing of flesh
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	crushing	crushing	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	bone	bone	NOUN	NN	Number=Sing	2	nmod	_	_
5	and	and	CCONJ	CC	_	7	cc	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	tearing	tearing	NOUN	NN	Number=Sing	2	conj	_	_
8	of	of	ADP	IN	_	9	case	_	_
9	flesh	flesh	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **crush** |  |  | bone |  |  |  |  | nom crushing «act transitive»: of=patient |
| 2 | **tear** |  | flesh |  |  |  |  |  | nom tearing «process intransitive»: of=agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
The filtering of water

```conllu
# sent_id = question:biology:265-tyrannosaurus-rex-teeth-dung-and-tiny-arms:e1:o4:1
# text = The filtering of water
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	filtering	filtering	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	water	water	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .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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- next →: [Tyrannosaurus rex: what we really know…, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/265-tyrannosaurus-rex-teeth-dung-and-tiny-arms/e2/)
- ↑ back to [Tyrannosaurus rex: what we really know, from teeth and dung to tiny arms](https://md.mova.elamur.ai/free/en/corpora/questions/biology/265-tyrannosaurus-rex-teeth-dung-and-tiny-arms/)