---
title: Which of the following statements most accurately characterises the… — Acids in the kitchen · tree and pragmatics
description: Which of the following statements most accurately characterises the protection of the stomach against its own acid? Exam question 3 of lesson 15 «Acids in the kitchen» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's
---

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# Exam question 3 · Acids in the kitchen

<!-- .ven lang=en -->
Which of the following statements most accurately characterises the protection of the stomach against its own acid?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** follow, characteris, protect · **To what, where:** protection, stomach

<!-- .vabout -->
This is exam question 3 of lesson 15 «Acids in the kitchen» 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/15-acids-in-the-kitchen/#e3).

## The question {#question}

```conllu
# sent_id = question:chemistry:15-acids-in-the-kitchen:e3:1
# text = Which of the following statements most accurately characterises the protection of the stomach against its own acid?
1	Which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
2	of	of	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	statements	statement	NOUN	NNS	Number=Plur	8	obl	_	_
6	most	most	ADV	RBS	Degree=Sup	7	advmod	_	_
7	accurately	accurately	ADV	RB	_	8	advmod	_	_
8	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	protection	protection	NOUN	NN	Number=Sing	8	obj	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	stomach	stomach	NOUN	NN	Number=Sing	10	nmod	_	_
14	against	against	ADP	IN	_	17	case	_	_
15	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	17	nmod:poss	_	_
16	own	own	ADJ	JJ	Degree=Pos	17	amod	_	_
17	acid	acid	NOUN	NN	Number=Sing	13	nmod	_	SpaceAfter=No
18	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | the protection of the stomach against stomach's own acid |  |  |  | of the following statements; accurately *property* | tree rules |
| 3 | **protect** |  |  | the stomach against stomach's own acid |  |  |  |  | nom protection «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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The stomach wall is protected by a layer of mucus

```conllu
# sent_id = question:chemistry:15-acids-in-the-kitchen:e3:o1:1
# text = The stomach wall is protected by a layer of mucus
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	stomach	stomach	NOUN	NN	Number=Sing	3	compound	_	_
3	wall	wall	NOUN	NN	Number=Sing	5	nsubj:pass	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux:pass	_	_
5	protected	protect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	by	by	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	layer	layer	NOUN	NN	Number=Sing	5	obl:agent	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	mucus	mucus	NOUN	NN	Number=Sing	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **protect** | present · passive | a layer of mucus | the stomach wall |  |  |  |  | vn defend-72.3 «NP V NP»: agent=Agent subject=Beneficiary |

### Option 2 {#o2}

<!-- .ven lang=en -->
The stomach is lined with a thin layer of bone

```conllu
# sent_id = question:chemistry:15-acids-in-the-kitchen:e3:o2:1
# text = The stomach is lined with a thin layer of bone
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	stomach	stomach	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	lined	line	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	with	with	ADP	IN	_	8	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	thin	thin	ADJ	JJ	Degree=Pos	8	amod	_	_
8	layer	layer	NOUN	NN	Number=Sing	4	obl	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	bone	bone	NOUN	NN	Number=Sing	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **line** | present · passive |  | the stomach |  |  |  | with a thin layer of bone | vn fill-9.8-1 «NP V NP PP.theme»: subject=Destination with layer=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
The stomach acid is too weak to harm tissue

```conllu
# sent_id = question:chemistry:15-acids-in-the-kitchen:e3:o3:1
# text = The stomach acid is too weak to harm tissue
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	stomach	stomach	NOUN	NN	Number=Sing	3	compound	_	_
3	acid	acid	NOUN	NN	Number=Sing	6	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
5	too	too	ADV	RB	_	6	advmod	_	_
6	weak	weak	ADJ	JJ	Degree=Pos	0	root	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	harm	harm	VERB	VB	VerbForm=Inf	6	advcl	_	_
9	tissue	tissue	NOUN	NN	Number=Sing	8	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the stomach acid |  |  |  |  | weak *property* | tree rules |
| 2 | **harm** | to-infinitive | the stomach acid *not said here* | tissue |  |  |  |  | vn amuse-31.1 «NP V NP»: agent=Stimulus tissue=Experiencer |

### Option 4 {#o4}

<!-- .ven lang=en -->
The acid is produced exclusively during sleep

```conllu
# sent_id = question:chemistry:15-acids-in-the-kitchen:e3:o4:1
# text = The acid is produced exclusively during sleep
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	acid	acid	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	produced	produce	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	exclusively	exclusively	ADV	RB	_	4	advmod	_	_
6	during	during	ADP	IN	_	7	case	_	_
7	sleep	sleep	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **produce** | present · passive |  | the acid |  |  | during sleep | exclusively *property* | vn create-26.4 «NP V NP»: subject=Result |

<!-- div src -->

**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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