---
title: Why do scientists compare a few giant bones with bones of living ani… — Giant reptiles of the past: Titanoboa,… · tree and pragmatics
description: Why do scientists compare a few giant bones with bones of living animals? Test 11 · ★ of lesson 383 «Giant reptiles of the past: Titanoboa, Sarcosuchus, Deinosuchus and giant tortoises» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of eac
---

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# Test 11 · ★ · Giant reptiles of the past: Titanoboa, Sarcosuchus, Deinos…

<!-- .ven lang=en -->
Why do scientists compare a few giant bones with bones of living animals?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** scientists · **What happens:** compare · **To what, where:** few giant bones

<!-- .vabout -->
This is test 11 · ★ of lesson 383 «Giant reptiles of the past: Titanoboa, Sarcosuchus, Deinosuchus and giant tortoises» of the biology course of Mova's primary school. 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/383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises/#t11).

## The question {#question}

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:t11:1
# text = Why do scientists compare a few giant bones with bones of living animals?
1	Why	why	ADV	WRB	PronType=Int	4	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	scientists	scientist	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	compare	compare	VERB	VB	VerbForm=Inf	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
6	few	few	ADJ	JJ	Degree=Pos	8	amod	_	_
7	giant	giant	ADJ	JJ	Degree=Pos	8	amod	_	_
8	bones	bone	NOUN	NNS	Number=Plur	4	obj	_	_
9	with	with	ADP	IN	_	10	case	_	_
10	bones	bone	NOUN	NNS	Number=Plur	4	obl	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	living	living	ADJ	JJ	Degree=Pos	13	amod	_	_
13	animals	animal	NOUN	NNS	Number=Plur	10	nmod	_	SpaceAfter=No
14	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **compare** | present · do-support | scientists | a few giant bones |  |  |  | with bones of living animals | vn amalgamate-22.2-2 «NP V NP PP.co-patient»: agent=Agent bone=Patient with bone=Co-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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
To work out the size and shape of the whole animal

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:t11:o1:1
# text = To work out the size and shape of the whole animal
1	To	to	PART	TO	_	2	mark	_	_
2	work	work	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	out	out	ADP	RP	_	2	compound:prt	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	size	size	NOUN	NN	Number=Sing	2	obj	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	shape	shape	NOUN	NN	Number=Sing	5	conj	_	_
8	of	of	ADP	IN	_	11	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	whole	whole	ADJ	JJ	Degree=Pos	11	amod	_	_
11	animal	animal	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work out** | to-infinitive |  | the size and shape of the whole animal |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent size=Topic |

### Option 2 {#o2}

<!-- .ven lang=en -->
To check the bones are not plastic toys made in a factory

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:t11:o2:1
# text = To check the bones are not plastic toys made in a factory
1	To	to	PART	TO	_	2	mark	_	_
2	check	check	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	bones	bone	NOUN	NNS	Number=Plur	8	nsubj	_	_
5	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
6	not	not	PART	RB	Polarity=Neg	8	advmod	_	_
7	plastic	plastic	ADJ	JJ	Degree=Pos	8	amod	_	_
8	toys	toy	NOUN	NNS	Number=Plur	2	obj	_	_
9	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	acl	_	_
10	in	in	ADP	IN	_	12	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	factory	factory	NOUN	NN	Number=Sing	9	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **check** | to-infinitive |  |  |  |  |  |  | vn assessment-34.1 «NP V NP»: agent=Agent |
| 2 | **not** **is a** | present | the bones | plastic toys |  |  |  |  | tree rules |
| 3 | **make** | participle |  | plastic toys *not said here* |  | a factory |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset |

### Option 3 {#o3}

<!-- .ven lang=en -->
To find the animal's name

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:t11:o3:1
# text = To find the animal's name
1	To	to	PART	TO	_	2	mark	_	_
2	find	find	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	animal	animal	NOUN	NN	Number=Sing	6	nmod:poss	_	SpaceAfter=No
5	's	's	PART	POS	_	4	case	_	_
6	name	name	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **find** | to-infinitive |  | the animal's name |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent name=Topic |
| 2 | **name** |  | the animal |  |  |  |  |  | nom name «communication transitive»: poss=agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
To make the old bones grow back

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:t11:o4:1
# text = To make the old bones grow back
1	To	to	PART	TO	_	2	mark	_	_
2	make	make	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	old	old	ADJ	JJ	Degree=Pos	5	amod	_	_
5	bones	bone	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
7	back	back	ADV	RB	_	6	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | to-infinitive |  |  |  |  |  |  | tree rules |
| 2 | **grow back** | present | the old bones |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |

<!-- div src -->

**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.

<!-- /div -->

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