---
title: A town removes all fallen leaves and dead logs from a park every wee… — Balance in a food web · tree and pragmatics
description: A town removes all fallen leaves and dead logs from a park every week for years. What slowly happens? Test 9 · ★★★ of lesson 30 «Balance in a food web» of the world 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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# Test 9 · ★★★ · Balance in a food web

<!-- .ven lang=en -->
A town removes all fallen leaves and dead logs from a park every week for years. What slowly happens?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** town · **What happens:** remove, fall, happen · **To what, where:** fallen leaves, park

<!-- .vabout -->
This is test 9 · ★★★ of lesson 30 «Balance in a food web» of the world 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/world/30-balance-in-food-webs/#t9).

## The question {#question}

<!-- .note -->
*Sentence 1:* A town removes all fallen leaves and dead logs from a park every week for years.

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:1
# text = A town removes all fallen leaves and dead logs from a park every week for years.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	town	town	NOUN	NN	Number=Sing	3	nsubj	_	_
3	removes	remove	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	all	all	ADV	RB	_	5	advmod	_	_
5	fallen	fall	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	amod	_	_
6	leaves	leaf	NOUN	NNS	Number=Plur	3	obj	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	dead	dead	ADJ	JJ	Degree=Pos	9	amod	_	_
9	logs	log	NOUN	NNS	Number=Plur	6	conj	_	_
10	from	from	ADP	IN	_	12	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	park	park	NOUN	NN	Number=Sing	3	obl	_	_
13	every	every	DET	DT	PronType=Tot	14	det	_	_
14	week	week	NOUN	NN	Number=Sing	3	obl:unmarked	_	_
15	for	for	ADP	IN	_	16	case	_	_
16	years	year	NOUN	NNS	Number=Plur	3	obl	_	SpaceAfter=No
17	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **remove** | present | a town | fallen leaves and dead logs |  | a park | week; year |  | vn fire-10.10 «NP V NP PP.source»: agent=Agent leaf=Theme from park=Source |
| 2 | **fall** | participle |  |  |  |  |  | all *property* | vn occur-48.3 «NP V»: agent=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.

<!-- .note -->
*Sentence 2:* What slowly happens?

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:2
# text = What slowly happens?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	slowly	slowly	ADV	RB	_	3	advmod	_	_
3	happens	happen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present |  |  |  |  |  | slowly *property* | vn occur-48.3-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The plants grow faster and greener than ever

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:o1:1
# text = The plants grow faster and greener than ever
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	plants	plant	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	faster	fast	ADV	RBR	Degree=Cmp	3	advmod	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	greener	green	ADJ	JJR	Degree=Cmp	3	conj	_	_
7	than	than	ADP	IN	_	8	case	_	_
8	ever	ever	ADV	RB	PronType=Ind	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | present | the plants |  |  |  |  | fast *property* | vn appear-48.1.1 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Nothing, because dead things are useless

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:o2:1
# text = Nothing, because dead things are useless
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	0	root	_	SpaceAfter=No
2	,	,	PUNCT	,	_	7	punct	_	_
3	because	because	SCONJ	IN	_	7	mark	_	_
4	dead	dead	ADJ	JJ	Degree=Pos	5	amod	_	_
5	things	thing	NOUN	NNS	Number=Plur	7	nsubj	_	_
6	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
7	useless	useless	ADJ	JJ	Degree=Pos	1	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | dead things |  |  |  |  | useless *property* | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
The predators get much more prey to eat

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:o3:1
# text = The predators get much more prey to eat
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	predators	predator	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	get	get	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	much	much	ADV	RB	_	5	advmod	_	_
5	more	more	ADJ	JJR	Degree=Cmp	6	amod	_	_
6	prey	prey	NOUN	NN	Number=Sing	3	obj	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	eat	eat	VERB	VB	VerbForm=Inf	3	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present | the predators | more prey |  |  |  |  | vn comprehend-87.2-1 «NP V NP»: agent=Experiencer prey=Stimulus |
| 2 | **eat** | to-infinitive | the predators *not said here* |  |  |  |  |  | vn eat-39.1-1 «NP V»: agent=Agent |

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

<!-- .ven lang=en -->
The soil gets poorer for the plants

```conllu
# sent_id = question:world:30-balance-in-food-webs:t9:o4:1
# text = The soil gets poorer for the plants
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	soil	soil	NOUN	NN	Number=Sing	3	nsubj	_	_
3	gets	get	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	poorer	poor	ADJ	JJR	Degree=Cmp	3	xcomp	_	_
5	for	for	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	plants	plant	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present | the soil |  |  |  |  | poor *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

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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: [Balance in a food web, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/world/30-balance-in-food-webs/t8/)
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