---
title: A meadow has 1000 kilograms of grass a year. Roughly how many kilogr… — Balance in a food web · tree and pragmatics
description: A meadow has 1000 kilograms of grass a year. Roughly how many kilograms of grasshoppers can it feed? Test 2 · ★★★ 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 2 · ★★★ · Balance in a food web

<!-- .ven lang=en -->
A meadow has 1000 kilograms of grass a year. Roughly how many kilograms of grasshoppers can it feed?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** meadow, many kilograms · **What happens:** have, feed · **To what, where:** 1000 kilograms

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This is test 2 · ★★★ 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/#t2).

## The question {#question}

<!-- .note -->
*Sentence 1:* A meadow has 1000 kilograms of grass a year.

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:1
# text = A meadow has 1000 kilograms of grass a year.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	meadow	meadow	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	1000	1000	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	kilograms	kilogram	NOUN	NNS	Number=Plur	3	obj	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	grass	grass	NOUN	NN	Number=Sing	5	nmod	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	year	year	NOUN	NN	Number=Sing	3	obl:unmarked	_	SpaceAfter=No
10	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | a meadow | 1000 kilograms of grass |  |  | year |  | vn birth-28.2-1 «NP V NP»: agent=Agent kilogram=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.

<!-- .note -->
*Sentence 2:* Roughly how many kilograms of grasshoppers can it feed?

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:2
# text = Roughly how many kilograms of grasshoppers can it feed?
1	Roughly	roughly	ADV	RB	_	3	advmod	_	_
2	how	how	ADV	WRB	PronType=Int	3	advmod	_	_
3	many	many	ADJ	JJ	Degree=Pos	4	amod	_	_
4	kilograms	kilogram	NOUN	NNS	Number=Plur	9	nsubj	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	grasshoppers	grasshopper	NOUN	NNS	Number=Plur	4	nmod	_	_
7	can	can	AUX	MD	VerbForm=Fin	9	aux	_	_
8	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	nsubj	_	_
9	feed	feed	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
10	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **feed** | can | many kilograms of grasshoppers |  |  |  |  |  | vn gorge-39.6 «NP V PP.patient»: agent=Agent |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
About 1000

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:o1:1
# text = About 1000
1	About	about	ADV	RB	_	2	advmod	_	_
2	1000	1000	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

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

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
About 100

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:o2:1
# text = About 100
1	About	about	ADV	RB	_	2	advmod	_	_
2	100	100	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

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

### Option 3 {#o3}

<!-- .ven lang=en -->
About 2000

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:o3:1
# text = About 2000
1	About	about	ADV	RB	_	2	advmod	_	_
2	2000	2000	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
About 500

```conllu
# sent_id = question:world:30-balance-in-food-webs:t2:o4:1
# text = About 500
1	About	about	ADV	RB	_	2	advmod	_	_
2	500	500	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

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

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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: [Balance in a food web, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/world/30-balance-in-food-webs/t1/)
- next →: [Balance in a food web, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/world/30-balance-in-food-webs/t3/)
- ↑ back to [Balance in a food web](https://md.mova.elamur.ai/free/en/corpora/questions/world/30-balance-in-food-webs/)

