---
title: «book says stomach acid can melt metal, so why ain't my belly meltin… — The human body deeper: lungs, stomach… · tree and pragmatics
description: «book says stomach acid can melt metal, so why ain't my belly melting» What is the answer? Test 3 of lesson 262 «The human body deeper: lungs, stomach and guts» 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 w
---

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# Test 3 · The human body deeper: lungs, stomach and guts

<!-- .ven lang=en -->
«book says stomach acid can melt metal, so why ain't my belly melting» What is the answer?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** book, stomach acid, ai, belly, answer · **What happens:** say, melt, not belly, be · **To what, where:** metal, belly · **Speech:** someone speaks here

<!-- .vabout -->
This is test 3 of lesson 262 «The human body deeper: lungs, stomach and guts» 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/262-human-body-deeper-lungs-stomach-and-guts/#t3).

## The question {#question}

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:t3:1
# text = «book says stomach acid can melt metal, so why ain't my belly melting» What is the answer?
1	«	«	PUNCT	``	_	3	punct	_	SpaceAfter=No
2	book	book	NOUN	NN	Number=Sing	3	nsubj	_	_
3	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	stomach	stomach	NOUN	NN	Number=Sing	5	compound	_	_
5	acid	acid	NOUN	NN	Number=Sing	7	nsubj	_	_
6	can	can	AUX	MD	VerbForm=Fin	7	aux	_	_
7	melt	melt	VERB	VB	VerbForm=Inf	3	ccomp	_	_
8	metal	metal	NOUN	NN	Number=Sing	7	obj	_	SpaceAfter=No
9	,	,	PUNCT	,	_	15	punct	_	_
10	so	so	ADV	RB	_	15	advmod	_	_
11	why	why	ADV	WRB	PronType=Int	15	advmod	_	_
12	ai	ai	X	FW	Foreign=Yes	15	nsubj	_	SpaceAfter=No
13	n't	not	PART	RB	Polarity=Neg	15	advmod	_	_
14	my	my	PRON	PRP$	Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs	15	nmod:poss	_	_
15	belly	belly	NOUN	NN	Number=Sing	3	ccomp	_	_
16	melting	melt	VERB	VBG	Tense=Pres|VerbForm=Part	15	acl	_	SpaceAfter=No
17	»	»	PUNCT	''	_	16	punct	_	_
18	What	what	PRON	WP	PronType=Int	16	obl	_	_
19	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	cop	_	_
20	the	the	DET	DT	Definite=Def|PronType=Art	21	det	_	_
21	answer	answer	NOUN	NN	Number=Sing	18	nsubj	_	SpaceAfter=No
22	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* *in a quote* | present | book |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **melt** *in a quote* | can | stomach acid | metal |  |  |  |  | vn other\_cos-45.4-1 «NP V NP ADJ»: agent=Patient metal=Result |
| 3 | **not** **belly** *in a quote* |  | ai |  |  |  |  |  | tree rules |
| 4 | **melt** *in a quote* | gerund | my belly *not said here* |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 5 | **is a** | present | the answer | my belly |  |  |  |  | tree rules |

<!-- .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 book is wrong, because stomach acid is really just as weak as plain water

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:t3:o1:1
# text = The book is wrong, because stomach acid is really just as weak as plain water
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	book	book	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	wrong	wrong	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
5	,	,	PUNCT	,	_	13	punct	_	_
6	because	because	SCONJ	IN	_	13	mark	_	_
7	stomach	stomach	NOUN	NN	Number=Sing	8	compound	_	_
8	acid	acid	NOUN	NN	Number=Sing	13	nsubj	_	_
9	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	_	_
10	really	really	ADV	RB	_	13	advmod	_	_
11	just	just	ADV	RB	_	13	advmod	_	_
12	as	as	ADV	RB	_	13	advmod	_	_
13	weak	weak	ADJ	JJ	Degree=Pos	4	conj	_	_
14	as	as	ADP	IN	_	16	case	_	_
15	plain	plain	ADJ	JJ	Degree=Pos	16	amod	_	_
16	water	water	NOUN	NN	Number=Sing	13	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the book |  |  |  |  | wrong *property* | tree rules |
| 2 | **is** | present | stomach acid |  |  |  |  | as plain water; weak *property* | tree rules |

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

<!-- .ven lang=en -->
A thick layer of slime protects the stomach, and the lining renews every few days

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:t3:o2:1
# text = A thick layer of slime protects the stomach, and the lining renews every few days
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	thick	thick	ADJ	JJ	Degree=Pos	3	amod	_	_
3	layer	layer	NOUN	NN	Number=Sing	6	nsubj	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	slime	slime	NOUN	NN	Number=Sing	3	nmod	_	_
6	protects	protect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	stomach	stomach	NOUN	NN	Number=Sing	6	obj	_	SpaceAfter=No
9	,	,	PUNCT	,	_	13	punct	_	_
10	and	and	CCONJ	CC	_	13	cc	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	lining	lining	NOUN	NN	Number=Sing	13	nsubj	_	_
13	renews	renew	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
14	every	every	DET	DT	PronType=Tot	16	det	_	_
15	few	few	ADJ	JJ	Degree=Pos	16	amod	_	_
16	days	day	NOUN	NNS	Number=Plur	13	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **protect** | present | a thick layer of slime | the stomach |  |  |  |  | vn defend-72.3 «NP V NP»: agent=Agent stomach=Beneficiary |
| 2 | **renew** | present | the lining |  |  |  | day |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
The stomach is lined with metal

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:t3:o3:1
# text = The stomach is lined with metal
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	_	6	case	_	_
6	metal	metal	NOUN	NN	Number=Sing	4	obl	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Acid only works when you sleep

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:t3:o4:1
# text = Acid only works when you sleep
1	Acid	acid	NOUN	NN	Number=Sing	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	works	work	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	when	when	SCONJ	WRB	_	6	mark	_	_
5	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	6	nsubj	_	_
6	sleep	sleep	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	3	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work** | present | Acid |  |  |  |  |  | vn employment-95.3 «NP V»: agent=Agent |
| 2 | **sleep** | present | you |  |  |  |  |  | vn snooze-40.4-1 «NP V»: agent=Agent |

<!-- 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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