---
title: Why does a fairy ring get bigger every year? — Fungi: mushrooms, mould and yeast · tree and pragmatics
description: Why does a fairy ring get bigger every year? Test 10 of lesson 62 «Fungi: mushrooms, mould and yeast» 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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# Test 10 · Fungi: mushrooms, mould and yeast

<!-- .ven lang=en -->
Why does a fairy ring get bigger every year?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** fairy ring · **What happens:** get

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This is test 10 of lesson 62 «Fungi: mushrooms, mould and yeast» of the biology 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/biology/62-fungi-mushrooms-mould-and-yeast/#t10).

## The question {#question}

```conllu
# sent_id = question:biology:62-fungi-mushrooms-mould-and-yeast:t10:1
# text = Why does a fairy ring get bigger every year?
1	Why	why	ADV	WRB	PronType=Int	6	advmod	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	fairy	fairy	ADJ	JJ	Degree=Pos	5	amod	_	_
5	ring	ring	NOUN	NN	Number=Sing	6	nsubj	_	_
6	get	get	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	bigger	big	ADJ	JJR	Degree=Cmp	6	xcomp	_	_
8	every	every	DET	DT	PronType=Tot	9	det	_	_
9	year	year	NOUN	NN	Number=Sing	6	obl:unmarked	_	SpaceAfter=No
10	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **get** | present · do-support | a fairy ring |  |  |  | year | big *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

<!-- .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 -->
More rain falls on the lawn

```conllu
# sent_id = question:biology:62-fungi-mushrooms-mould-and-yeast:t10:o1:1
# text = More rain falls on the lawn
1	More	more	ADJ	JJR	Degree=Cmp	2	amod	_	_
2	rain	rain	NOUN	NN	Number=Sing	3	nsubj	_	_
3	falls	fall	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	on	on	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	lawn	lawn	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fall** | present | More rain |  |  | the lawn |  |  | vn occur-48.3 «NP V PP»: agent=Theme on lawn=Location |

### Option 2 {#o2}

<!-- .ven lang=en -->
Mushrooms walk outwards at night

```conllu
# sent_id = question:biology:62-fungi-mushrooms-mould-and-yeast:t10:o2:1
# text = Mushrooms walk outwards at night
1	Mushrooms	mushroom	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	walk	walk	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	outwards	outwards	ADV	RB	_	2	advmod	_	_
4	at	at	ADP	IN	_	5	case	_	_
5	night	night	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **walk** | present | Mushrooms |  |  |  | night | outwards *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Fairies dance in a bigger ring every year

```conllu
# sent_id = question:biology:62-fungi-mushrooms-mould-and-yeast:t10:o3:1
# text = Fairies dance in a bigger ring every year
1	Fairies	fairy	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	dance	dance	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	in	in	ADP	IN	_	6	case	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	bigger	big	ADJ	JJR	Degree=Cmp	6	amod	_	_
6	ring	ring	NOUN	NN	Number=Sing	2	obl	_	_
7	every	every	DET	DT	PronType=Tot	8	det	_	_
8	year	year	NOUN	NN	Number=Sing	2	obl:unmarked	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **dance** | present | Fairies |  |  | a bigger ring | year |  | vn modes\_of\_being\_with\_motion-47.3 «NP V PP.location»: agent=Theme in ring=Location |

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

<!-- .ven lang=en -->
The fungus threads keep growing outwards

```conllu
# sent_id = question:biology:62-fungi-mushrooms-mould-and-yeast:t10:o4:1
# text = The fungus threads keep growing outwards
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	fungus	fungus	NOUN	NN	Number=Sing	3	compound	_	_
3	threads	thread	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	keep	keep	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	growing	grow	VERB	VBG	VerbForm=Ger	4	xcomp	_	_
6	outwards	outwards	ADV	RB	_	5	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | the fungus threads |  |  |  |  |  | tree rules |
| 2 | **grow** | gerund | the fungus threads *not said here* |  |  |  |  | outwards *property* | vn appear-48.1.1 «NP V»: agent=Theme |

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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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