---
title: Ascertain the reason for which a garden pond intended for frogs ough… — Frogs and toads near home: spawn, croa… · tree and pragmatics
description: Ascertain the reason for which a garden pond intended for frogs ought to contain no fish. Exam question 4 of lesson 309 «Frogs and toads near home: spawn, croaking choruses, toad crossings and the fire-bellied toad» of the biology course of Mova's primary school, with the dependency tree and pragmat
---

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# Exam question 4 · Frogs and toads near home: spawn, croaking choruses, toad…

<!-- .ven lang=en -->
Ascertain the reason for which a garden pond intended for frogs ought to contain no fish.

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you, garden pond · **What happens:** ascertain, intend, contain · **To what, where:** reason, garden pond, fish

<!-- .vabout -->
This is exam question 4 of lesson 309 «Frogs and toads near home: spawn, croaking choruses, toad crossings and the fire-bellied toad» 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/309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad/#e4).

## The question {#question}

```conllu
# sent_id = question:biology:309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad:e4:1
# text = Ascertain the reason for which a garden pond intended for frogs ought to contain no fish.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	which	which	PRON	WDT	PronType=Rel	14	obl	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	garden	garden	NOUN	NN	Number=Sing	8	compound	_	_
8	pond	pond	NOUN	NN	Number=Sing	14	nsubj	_	_
9	intended	intend	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	acl	_	_
10	for	for	ADP	IN	_	11	case	_	_
11	frogs	frog	NOUN	NNS	Number=Plur	9	obl	_	_
12	ought	ought	AUX	MD	VerbForm=Fin	14	aux	_	_
13	to	to	PART	TO	_	14	mark	_	_
14	contain	contain	VERB	VB	VerbForm=Inf	3	acl	_	_
15	no	no	DET	DT	PronType=Neg	16	det	_	_
16	fish	fish	NOUN	NN	Number=Sing	14	obj	_	SpaceAfter=No
17	.	.	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 reason |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent reason=Topic |
| 2 | **intend** | participle |  | a garden pond *not said here* |  |  |  | for frogs | vn intend-61.2-1-1 «NP V S\_ING»: agent=Agent |
| 3 | **contain** | ought | a garden pond | no fish |  |  |  | for the reason | vn comprise-107.2-2 «NP V NP»: agent=Pivot fish=Theme |

<!-- .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 -->
Fish raise the temperature of the water excessively

```conllu
# sent_id = question:biology:309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad:e4:o1:1
# text = Fish raise the temperature of the water excessively
1	Fish	fish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	raise	raise	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	temperature	temperature	NOUN	NN	Number=Sing	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	water	water	NOUN	NN	Number=Sing	4	nmod	_	_
8	excessively	excessively	ADV	RB	_	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **raise** | present | Fish | the temperature of the water |  |  |  | excessively *property* | vn put\_direction-9.4 «NP V NP»: agent=Agent temperature=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Fish obstruct the mating calls of male frogs at night

```conllu
# sent_id = question:biology:309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad:e4:o2:1
# text = Fish obstruct the mating calls of male frogs at night
1	Fish	fish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	obstruct	obstruct	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	mating	mating	NOUN	NN	Number=Sing	5	compound	_	_
5	calls	call	NOUN	NNS	Number=Plur	2	obj	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	male	male	ADJ	JJ	Degree=Pos	8	amod	_	_
8	frogs	frog	NOUN	NNS	Number=Plur	5	nmod	_	_
9	at	at	ADP	IN	_	10	case	_	_
10	night	night	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **obstruct** | present | Fish | the mating calls of male frogs |  |  | night |  | vn discourage-64.5-1 «NP V NP»: agent=Causer call=Eventuality |
| 2 | **call** |  |  | male frogs |  |  |  |  | nom call «communication transitive»: of=patient |

### Option 3 · ← Mova's choice {#o3}

<!-- .ven lang=en -->
Fish are consumed in excessive numbers by adult frogs

```conllu
# sent_id = question:biology:309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad:e4:o3:1
# text = Fish are consumed in excessive numbers by adult frogs
1	Fish	fish	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	consumed	consume	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	in	in	ADP	IN	_	6	case	_	_
5	excessive	excessive	ADJ	JJ	Degree=Pos	6	amod	_	_
6	numbers	number	NOUN	NNS	Number=Plur	3	obl	_	_
7	by	by	ADP	IN	_	9	case	_	_
8	adult	adult	ADJ	JJ	Degree=Pos	9	amod	_	_
9	frogs	frog	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **consume** | present · passive | adult frogs | Fish |  | excessive numbers |  |  | vn consume-66 «NP V NP»: agent=Agent subject=Asset |

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

<!-- .ven lang=en -->
Fish consume the spawn and tadpoles of frogs

```conllu
# sent_id = question:biology:309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad:e4:o4:1
# text = Fish consume the spawn and tadpoles of frogs
1	Fish	fish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	consume	consume	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	spawn	spawn	NOUN	NN	Number=Sing	2	obj	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	tadpoles	tadpole	NOUN	NNS	Number=Plur	4	conj	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	frogs	frog	NOUN	NNS	Number=Plur	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **consume** | present | Fish | the spawn and tadpoles of frogs |  |  |  |  | vn consume-66 «NP V NP»: agent=Agent spawn=Asset |

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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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- ← previous: [Frogs and toads near home: spawn, croa…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad/e3/)
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- ↑ back to [Frogs and toads near home: spawn, croaking choruses, toad crossings and the fire-bellied toad](https://md.mova.elamur.ai/free/en/corpora/questions/biology/309-frogs-and-toads-near-home-spawn-croaking-choruses-toad-crossings-and-the-fire-bellied-toad/)