---
title: Leo says penicillin proves all mould is good to eat. What's true? — Bread rising: yeast at work · tree and pragmatics
description: Leo says penicillin proves all mould is good to eat. What's true? Test 6 of lesson 21 «Bread rising: yeast at work» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 6 · Bread rising: yeast at work

<!-- .ven lang=en -->
Leo says penicillin proves all mould is good to eat. What's true?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** Leo, penicillin, mould · **What happens:** say, prove, be, eat · **Speech:** someone speaks here

<!-- .vabout -->
This is test 6 of lesson 21 «Bread rising: yeast at work» of the chemistry 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/chemistry/21-bread-rising-yeast-at-work/#t6).

## The question {#question}

<!-- .note -->
*Sentence 1:* Leo says penicillin proves all mould is good to eat.

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:1
# text = Leo says penicillin proves all mould is good to eat.
1	Leo	Leo	PROPN	NNP	Number=Sing	2	nsubj	_	_
2	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	penicillin	penicillin	NOUN	NN	Number=Sing	4	nsubj	_	_
4	proves	prove	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
5	all	all	DET	DT	PronType=Tot	6	det	_	_
6	mould	mould	NOUN	NN	Number=Sing	8	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
8	good	good	ADJ	JJ	Degree=Pos	4	ccomp	_	_
9	to	to	PART	TO	_	10	mark	_	_
10	eat	eat	VERB	VB	VerbForm=Inf	8	xcomp	_	SpaceAfter=No
11	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Leo |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **prove** | present | penicillin |  |  |  |  |  | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent |
| 3 | **is** | present | all mould |  |  |  |  | good *property* | tree rules |
| 4 | **eat** | to-infinitive | all mould *not said here* |  |  |  |  |  | vn eat-39.1-1 «NP V»: agent=Agent |

<!-- .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's true?

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:2
# text = What's true?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

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

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
All mould is a medicine, so any mouldy bread is healthy

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:o1:1
# text = All mould is a medicine, so any mouldy bread is healthy
1	All	all	DET	DT	PronType=Tot	2	det	_	_
2	mould	mould	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	medicine	medicine	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
6	,	,	PUNCT	,	_	12	punct	_	_
7	so	so	ADV	RB	_	12	advmod	_	_
8	any	any	DET	DT	PronType=Ind	10	det	_	_
9	mouldy	mouldy	ADJ	JJ	Degree=Pos	10	amod	_	_
10	bread	bread	NOUN	NN	Number=Sing	12	nsubj	_	_
11	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
12	healthy	healthy	ADJ	JJ	Degree=Pos	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | all mould | a medicine |  |  |  |  | tree rules |
| 2 | **is** | present | any mouldy bread |  |  |  |  | healthy *property* | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Penicillin is made from yeast, not mould

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:o2:1
# text = Penicillin is made from yeast, not mould
1	Penicillin	penicillin	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	from	from	ADP	IN	_	5	case	_	_
5	yeast	yeast	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
6	,	,	PUNCT	,	_	8	punct	_	_
7	not	not	PART	RB	Polarity=Neg	8	advmod	_	_
8	mould	mould	NOUN	NN	Number=Sing	5	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | Penicillin |  | yeast and mould |  |  | vn build-26.1-1 «NP.asset V PP»: subject=Product from yeast=Material |

### Option 3 {#o3}

<!-- .ven lang=en -->
Mould is never useful for anything

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:o3:1
# text = Mould is never useful for anything
1	Mould	mould	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	never	never	ADV	RB	PronType=Neg	4	advmod	_	_
4	useful	useful	ADJ	JJ	Degree=Pos	0	root	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	anything	anything	PRON	NN	Number=Sing|PronType=Ind	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **is** | present | Mould |  |  |  |  | for anything; useful *property* | tree rules |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
One mould gave a medicine, but bread mould can be harmful

```conllu
# sent_id = question:chemistry:21-bread-rising-yeast-at-work:t6:o4:1
# text = One mould gave a medicine, but bread mould can be harmful
1	One	one	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	mould	mould	NOUN	NN	Number=Sing	3	nsubj	_	_
3	gave	give	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	medicine	medicine	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	12	punct	_	_
7	but	but	CCONJ	CC	_	12	cc	_	_
8	bread	bread	NOUN	NN	Number=Sing	9	compound	_	_
9	mould	mould	NOUN	NN	Number=Sing	12	nsubj	_	_
10	can	can	AUX	MD	VerbForm=Fin	12	aux	_	_
11	be	be	AUX	VB	VerbForm=Inf	12	cop	_	_
12	harmful	harmful	ADJ	JJ	Degree=Pos	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | past | One mould | a medicine |  |  |  |  | vn give-13.1-1 «NP V NP»: agent=Agent medicine=Theme |
| 2 | **is** | can | bread mould |  |  |  |  | harmful *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.

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