---
title: Identify the principal reason for which the frying of an egg cannot… — Changes you can undo and changes you c… · tree and pragmatics
description: Identify the principal reason for which the frying of an egg cannot be reversed in the kitchen. Exam question 2 of lesson 9 «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova'
---

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# Exam question 2 · Changes you can undo and changes you can't

<!-- .ven lang=en -->
Identify the principal reason for which the frying of an egg cannot be reversed in the kitchen.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you · **What happens:** identify, not reverse, fry · **To what, where:** principal reason, frying, kitchen, egg

<!-- .vabout -->
This is exam question 2 of lesson 9 «Changes you can undo and changes you can't» of the chemistry 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/chemistry/9-changes-you-can-and-cannot-undo/#e2).

## The question {#question}

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:e2:1
# text = Identify the principal reason for which the frying of an egg cannot be reversed in the kitchen.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	PRON	WDT	PronType=Rel	15	obl	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	frying	frying	NOUN	NN	Number=Sing	15	nsubj:pass	_	_
9	of	of	ADP	IN	_	11	case	_	_
10	an	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	egg	egg	NOUN	NN	Number=Sing	8	nmod	_	_
12	can	can	AUX	MD	VerbForm=Fin	15	aux	_	SpaceAfter=No
13	not	not	PART	RB	Polarity=Neg	15	advmod	_	_
14	be	be	AUX	VB	VerbForm=Inf	15	aux:pass	_	_
15	reversed	reverse	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	acl:relcl	_	_
16	in	in	ADP	IN	_	18	case	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	kitchen	kitchen	NOUN	NN	Number=Sing	15	obl	_	SpaceAfter=No
19	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal reason |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme |
| 2 | **not** **reverse** | can · passive |  | the frying of a egg |  | the kitchen |  | for the principal reason | vn other\_cos-45.4 «NP V NP.patient»: subject=Patient |
| 3 | **fry** |  |  | a egg |  |  |  |  | nom frying «act transitive»: of=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The egg has been frozen solid

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:e2:o1:1
# text = The egg has been frozen solid
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	egg	egg	NOUN	NN	Number=Sing	5	nsubj:pass	_	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	been	be	AUX	VBN	Tense=Past|VerbForm=Part	5	aux:pass	_	_
5	frozen	freeze	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	solid	solid	ADJ	JJ	Degree=Pos	5	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | present · perfect · passive |  | the egg |  |  |  | solid *property* | vn other\_cos-45.4-1 «NP V NP ADJ»: subject=Result |

### Option 2 {#o2}

<!-- .ven lang=en -->
The yolk has been converted to metal

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:e2:o2:1
# text = The yolk has been converted to metal
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	yolk	yolk	NOUN	NN	Number=Sing	5	nsubj:pass	_	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	been	be	AUX	VBN	Tense=Past|VerbForm=Part	5	aux:pass	_	_
5	converted	convert	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	to	to	ADP	IN	_	7	case	_	_
7	metal	metal	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **convert** | present · perfect · passive |  | the yolk |  |  |  | to metal *result* | vn convert-26.6.2-1-1 «NP V NP S\_ING»: subject=Patient to metal=Result |

### Option 3 {#o3}

<!-- .ven lang=en -->
The egg has lost its entire mass to the surrounding air

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:e2:o3:1
# text = The egg has lost its entire mass to the surrounding air
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	egg	egg	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
4	lost	lose	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
6	entire	entire	ADJ	JJ	Degree=Pos	7	amod	_	_
7	mass	mass	NOUN	NN	Number=Sing	4	obj	_	_
8	to	to	ADP	IN	_	11	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	surrounding	surround	VERB	VBG	VerbForm=Ger	11	amod	_	_
11	air	air	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lose** | present · perfect · passive |  | the egg |  |  |  | to the surrounding air | tree rules |
| 2 | **surround** | gerund |  |  |  |  |  |  | vn contiguous\_location-47.8 «NP V NP»: agent=Theme |

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

<!-- .ven lang=en -->
The proteins have unfolded and become permanently entangled

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:e2:o4:1
# text = The proteins have unfolded and become permanently entangled
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	proteins	protein	NOUN	NNS	Number=Plur	4	nsubj:pass	_	_
3	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
4	unfolded	unfold	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	become	become	VERB	VB	VerbForm=Inf	4	conj	_	_
7	permanently	permanently	ADV	RB	_	8	advmod	_	_
8	entangled	entangle	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **unfold** | present · perfect · passive |  | the proteins |  |  |  |  | vn bend-45.2 «NP V NP.patient»: subject=Patient |
| 2 | **become** | infinitive |  |  |  |  |  |  | tree rules |
| 3 | **entangle** | participle |  |  |  |  |  | permanently *property* | vn amalgamate-22.2-2 «NP V ADVP-Middle»: agent=Patient |

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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: [Changes you can undo and changes you c…, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/9-changes-you-can-and-cannot-undo/e1/)
- next →: [Changes you can undo and changes you c…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/9-changes-you-can-and-cannot-undo/e3/)
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