---
title: Identify the principal evidence indicating that Deinosuchus preyed u… — Giant reptiles of the past: Titanoboa,… · tree and pragmatics
description: Identify the principal evidence indicating that Deinosuchus preyed upon dinosaurs. Exam question 2 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 questi
---

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# Exam question 2 · Giant reptiles of the past: Titanoboa, Sarcosuchus, Deinos…

<!-- .ven lang=en -->
Identify the principal evidence indicating that Deinosuchus preyed upon dinosaurs.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, principal evidence, Deinosuchus · **What happens:** identify, indicate, prey · **To what, where:** principal evidence

<!-- .vabout -->
This is exam question 2 of lesson 383 «Giant reptiles of the past: Titanoboa, Sarcosuchus, Deinosuchus and giant tortoises» 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/383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises/#e2).

## The question {#question}

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:e2:1
# text = Identify the principal evidence indicating that Deinosuchus preyed upon dinosaurs.
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	evidence	evidence	NOUN	NN	Number=Sing	1	obj	_	_
5	indicating	indicate	VERB	VBG	VerbForm=Ger	4	acl	_	_
6	that	that	SCONJ	IN	_	8	mark	_	_
7	Deinosuchus	Deinosuchus	PROPN	NNP	Number=Sing	8	nsubj	_	_
8	preyed	prey	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	5	ccomp	_	_
9	upon	upon	ADP	IN	_	10	case	_	_
10	dinosaurs	dinosaur	NOUN	NNS	Number=Plur	8	obl	_	SpaceAfter=No
11	.	.	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 evidence |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent evidence=Theme |
| 2 | **indicate** | gerund | the principal evidence *not said here* |  |  |  |  |  | vn indicate-78-1 «NP V how S»: agent=Pivot clause=Topic |
| 3 | **prey** | past | Deinosuchus |  |  |  |  | upon dinosaurs | tree rules |

<!-- .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 -->
Contemporary written accounts

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:e2:o1:1
# text = Contemporary written accounts
1	Contemporary	contemporary	ADJ	JJ	Degree=Pos	3	amod	_	_
2	written	write	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	amod	_	_
3	accounts	account	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **write** | participle |  |  |  |  |  |  | vn scribble-25.2-1 «NP V»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
Paintings upon the walls of caves

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:e2:o2:1
# text = Paintings upon the walls of caves
1	Paintings	painting	NOUN	NNS	Number=Plur	0	root	_	_
2	upon	upon	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	walls	wall	NOUN	NNS	Number=Plur	1	nmod	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	caves	cave	NOUN	NNS	Number=Plur	4	nmod	_	_
```

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

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

<!-- .ven lang=en -->
Tooth marks corresponding to its dentition upon fossil dinosaur bones

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:e2:o3:1
# text = Tooth marks corresponding to its dentition upon fossil dinosaur bones
1	Tooth	tooth	NOUN	NN	Number=Sing	2	compound	_	_
2	marks	mark	NOUN	NNS	Number=Plur	0	root	_	_
3	corresponding	correspond	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	to	to	ADP	IN	_	6	case	_	_
5	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	dentition	dentition	NOUN	NN	Number=Sing	3	obl	_	_
7	upon	upon	ADP	IN	_	10	case	_	_
8	fossil	fossil	NOUN	NN	Number=Sing	9	compound	_	_
9	dinosaur	dinosaur	NOUN	NN	Number=Sing	10	compound	_	_
10	bones	bone	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **correspond** | gerund | Tooth marks *not said here* |  |  |  |  | to its dentition; upon dinosaur bones | vn correspond-36.1 «NP V»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
Preserved stomach contents containing feathers and fragments of bone

```conllu
# sent_id = question:biology:383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises:e2:o4:1
# text = Preserved stomach contents containing feathers and fragments of bone
1	Preserved	preserve	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	amod	_	_
2	stomach	stomach	NOUN	NN	Number=Sing	3	compound	_	_
3	contents	contents	NOUN	NNS	Number=Ptan	0	root	_	_
4	containing	contain	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	feathers	feather	NOUN	NNS	Number=Plur	3	conj	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	fragments	fragment	NOUN	NNS	Number=Plur	3	conj	_	_
8	of	of	ADP	IN	_	9	case	_	_
9	bone	bone	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **preserve** | participle |  |  |  |  |  |  | vn defend-72.3 «NP V S\_ING»: agent=Agent |
| 2 | **contain** | gerund |  |  |  |  |  |  | vn comprise-107.2-2 «NP V NP»: agent=Pivot |

<!-- 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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