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Exam question 2 · Sounds wrong, but is right

A snail situated at the bottom of a well ten metres deep ascends three metres during each day and descends two metres during each night. Ascertain the day on which it emerges from the well.

Mova's choice: option 1 · The right answer: option 1 · right ✓ · Who acts: snail, you · What happens: situate, ascend, descend, ascertain, emerge · To what, where: snail, bottom, three metres, two metres, well

This is exam question 2 of lesson 182 «Sounds wrong, but is right» of the world 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.

The question

Sentence 1: A snail situated at the bottom of a well ten metres deep ascends three metres during each day and descends two metres during each night.

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	A	a	DET	Definite=Ind PronType=Art	2 snail	det
2	snail	snail	NOUN	Number=Sing	13 ascends	nsubj
3	situated	situate	VERB	Tense=Past VerbForm=Part Voice=Pass	2 snail	acl
4	at	at	ADP	_	6 bottom	case
5	the	the	DET	Definite=Def PronType=Art	6 bottom	det
6	bottom	bottom	NOUN	Number=Sing	3 situated	obl
7	of	of	ADP	_	11 metres	case
8	a	a	DET	Definite=Ind PronType=Art	11 metres	det
9	well	well	ADV	Degree=Pos	10 ten	advmod
10	ten	ten	NUM	NumForm=Word NumType=Card	11 metres	nummod
11	metres	metre	NOUN	Number=Plur	12 deep	obl:unmarked
12	deep	deep	ADJ	Degree=Pos	6 bottom	amod
13	ascends	ascend	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
14	three	three	NUM	NumForm=Word NumType=Card	15 metres	nummod
15	metres	metre	NOUN	Number=Plur	13 ascends	obj
16	during	during	ADP	_	18 day	case
17	each	each	DET	PronType=Tot	18 day	det
18	day	day	NOUN	Number=Sing	13 ascends	obl
19	and	and	CCONJ	_	20 descends	cc
20	descends	descend	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	13 ascends	conj
21	two	two	NUM	NumForm=Word NumType=Card	22 metres	nummod
22	metres	metre	NOUN	Number=Plur	20 descends	obj
23	during	during	ADP	_	25 night	case
24	each	each	DET	PronType=Tot	25 night	det
25	night	night	NOUN	Number=Sing	20 descends	obl
26	.	.	PUNCT	_	13 ascends	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	situate	participle		a snail not said here		the bottom			vn put-9.1 «NP V NP PP.destination»: agent=Agent at bottom=Destination
2	ascend	present	a snail	three metres			day		vn escape-51.1-1-3 «NP V NP»: agent=Theme metre=Trajectory
3	descend	present	a snail not said here	two metres			night		vn meander-47.7-1 «PP.location V NP»: agent=Location metre=Theme

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.

Sentence 2: Ascertain the day on which it emerges from the well.

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Ascertain	ascertain	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	3 day	det
3	day	day	NOUN	Number=Sing	1 Ascertain	obj
4	on	on	ADP	_	5 which	case
5	which	which	PRON	PronType=Rel	7 emerges	obl
6	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	7 emerges	nsubj
7	emerges	emerge	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 day	acl:relcl
8	from	from	ADP	_	10 well	case
9	the	the	DET	Definite=Def PronType=Art	10 well	det
10	well	well	NOUN	Number=Sing	7 emerges	obl
11	.	.	PUNCT	_	1 Ascertain	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	ascertain	imperative	you not said here				day		vn discover-84 «NP V how S»: agent=Agent
2	emerge	present	snail			the well	on the day		vn appear-48.1.1 «NP V PP.location»: agent=Theme on which=Location

The options

Option 1 · ← Mova's choice · ✓ the right answer

The eighth day

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 day	det
2	eighth	eighth	ADJ	Degree=Pos	3 day	amod
3	day	day	NOUN	Number=Sing	root	root

The frames reader finds no event or fact in this sentence.

Option 2

The seventh day

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 day	det
2	seventh	seventh	ADJ	Degree=Pos	3 day	amod
3	day	day	NOUN	Number=Sing	root	root

The frames reader finds no event or fact in this sentence.

Option 3

The tenth day

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 day	det
2	tenth	tenth	ADJ	Degree=Pos	3 day	amod
3	day	day	NOUN	Number=Sing	root	root

The frames reader finds no event or fact in this sentence.

Option 4

The fifth day

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 day	det
2	fifth	fifth	ADJ	Degree=Pos	3 day	amod
3	day	day	NOUN	Number=Sing	root	root

The frames reader finds no event or fact in this sentence.

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.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/world/182-sounds-wrong-but-is-right/e2/