---
title: Identify the principal purpose of the chest-beating display of the g… — The ape house: gorillas and chimpanzees · tree and pragmatics
description: Identify the principal purpose of the chest-beating display of the gorilla. Exam question 1 of lesson 84 «The ape house: gorillas and chimpanzees» of the biology 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 · The ape house: gorillas and chimpanzees

<!-- .ven lang=en -->
Identify the principal purpose of the chest-beating display of the gorilla.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you, beating display · **What happens:** identify, beat, purpose, display · **To what, where:** principal purpose, gorilla

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This is exam question 1 of lesson 84 «The ape house: gorillas and chimpanzees» 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/84-ape-house-gorillas-and-chimpanzees/#e1).

## The question {#question}

```conllu
# sent_id = question:biology:84-ape-house-gorillas-and-chimpanzees:e1:1
# text = Identify the principal purpose of the chest-beating display of the gorilla.
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	of	of	ADP	IN	_	10	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
7	chest	chest	NOUN	NN	Number=Sing	9	compound	_	SpaceAfter=No
8	-	-	PUNCT	HYPH	_	7	punct	_	SpaceAfter=No
9	beating	beat	VERB	VBG	VerbForm=Ger	10	amod	_	_
10	display	display	NOUN	NN	Number=Sing	4	nmod	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	gorilla	gorilla	NOUN	NN	Number=Sing	10	nmod	_	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 of the beating display of the gorilla |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent purpose=Theme |
| 2 | **beat** | gerund |  |  |  |  |  |  | vn sound\_emission-43.2 «NP V»: agent=Theme |
| 3 | **purpose** |  | the beating display of the gorilla |  |  |  |  |  | nom purpose «cognition intransitive»: of=agent |
| 4 | **display** |  |  | the gorilla |  |  |  |  | nom display «communication 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 -->
To regulate body temperature

```conllu
# sent_id = question:biology:84-ape-house-gorillas-and-chimpanzees:e1:o1:1
# text = To regulate body temperature
1	To	to	PART	TO	_	2	mark	_	_
2	regulate	regulate	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	body	body	NOUN	NN	Number=Sing	4	compound	_	_
4	temperature	temperature	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **regulate** | to-infinitive |  | body temperature |  |  |  |  | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
To dislodge parasites from the fur

```conllu
# sent_id = question:biology:84-ape-house-gorillas-and-chimpanzees:e1:o2:1
# text = To dislodge parasites from the fur
1	To	to	PART	TO	_	2	mark	_	_
2	dislodge	dislodge	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	parasites	parasite	NOUN	NNS	Number=Plur	2	obj	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	fur	fur	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **dislodge** | to-infinitive |  | parasites |  | the fur |  |  | vn remove-10.1 «NP V NP PP»: agent=Agent parasite=Theme from fur=Initial\_Location |

### Option 3 {#o3}

<!-- .ven lang=en -->
To summon the keeper at the appointed hour of feeding each day

```conllu
# sent_id = question:biology:84-ape-house-gorillas-and-chimpanzees:e1:o3:1
# text = To summon the keeper at the appointed hour of feeding each day
1	To	to	PART	TO	_	2	mark	_	_
2	summon	summon	VERB	VB	VerbForm=Inf	8	advcl	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	keeper	keeper	NOUN	NN	Number=Sing	2	obj	_	_
5	at	at	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	appointed	appoint	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	amod	_	_
8	hour	hour	NOUN	NN	Number=Sing	0	root	_	_
9	of	of	SCONJ	IN	_	10	mark	_	_
10	feeding	feed	VERB	VBG	VerbForm=Ger	8	acl	_	_
11	each	each	DET	DT	PronType=Tot	12	det	_	_
12	day	day	NOUN	NN	Number=Sing	10	obl:unmarked	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **summon** | to-infinitive |  | the keeper |  |  |  |  | vn urge-58.1-1 «NP V NP»: agent=Agent keeper=Recipient |
| 2 | **appoint** | participle |  |  |  |  |  |  | vn appoint-29.1 «NP V NP»: agent=Agent |
| 3 | **feed** | gerund | the appointed hour *not said here* |  |  |  | day |  | vn gorge-39.6 «NP V PP.patient»: agent=Agent |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
To signal size and strength, frequently averting an actual fight

```conllu
# sent_id = question:biology:84-ape-house-gorillas-and-chimpanzees:e1:o4:1
# text = To signal size and strength, frequently averting an actual fight
1	To	to	PART	TO	_	2	mark	_	_
2	signal	signal	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	size	size	NOUN	NN	Number=Sing	2	obj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	strength	strength	NOUN	NN	Number=Sing	3	conj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	8	punct	_	_
7	frequently	frequently	ADV	RB	_	8	advmod	_	_
8	averting	avert	VERB	VBG	Tense=Pres|VerbForm=Part	2	advcl	_	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	actual	actual	ADJ	JJ	Degree=Pos	11	amod	_	_
11	fight	fight	NOUN	NN	Number=Sing	8	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **signal** *speech: other* | to-infinitive |  | size and strength |  |  |  |  | vn instr\_communication-37.4.1 «NP V NP»: agent=Agent size=Topic |
| 2 | **avert** | gerund |  | a actual fight |  |  |  | frequently *property* | tree rules |

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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.

<!-- /div -->

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- ← previous: [The ape house: gorillas and chimpanzees, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/biology/84-ape-house-gorillas-and-chimpanzees/t11/)
- next →: [The ape house: gorillas and chimpanzees, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/84-ape-house-gorillas-and-chimpanzees/e2/)
- ↑ back to [The ape house: gorillas and chimpanzees](https://md.mova.elamur.ai/free/en/corpora/questions/biology/84-ape-house-gorillas-and-chimpanzees/)