Exam question 3 · Earth from space

Select the response that is consistent with the established facts concerning the visibility of the Great Wall of China from orbit.

Mova's choice: option 1 · The right answer: option 2 · wrong ✗ · Who acts: you, response, established facts · What happens: select, be, establish, concern · To what, where: response, visibility, orbit

This is exam question 3 of lesson 13 «Earth from space» of the myths 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

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Select	select	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	3 response	det
3	response	response	NOUN	Number=Sing	1 Select	obj
4	that	that	PRON	PronType=Rel	6 consistent	nsubj
5	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 consistent	cop
6	consistent	consistent	ADJ	Degree=Pos	3 response	acl:relcl
7	with	with	ADP	_	10 facts	case
8	the	the	DET	Definite=Def PronType=Art	10 facts	det
9	established	establish	VERB	Tense=Past VerbForm=Part Voice=Pass	10 facts	amod
10	facts	fact	NOUN	Number=Plur	6 consistent	obl
11	concerning	concern	VERB	VerbForm=Ger	10 facts	acl
12	the	the	DET	Definite=Def PronType=Art	13 visibility	det
13	visibility	visibility	NOUN	Number=Sing	11 concerning	obj
14	of	of	ADP	_	17 Wall	case
15	the	the	DET	Definite=Def PronType=Art	17 Wall	det
16	Great	great	ADJ	Degree=Pos	17 Wall	amod
17	Wall	Wall	PROPN	Number=Sing	13 visibility	nmod
18	of	of	ADP	_	19 China	case
19	China	China	PROPN	Number=Sing	17 Wall	nmod
20	from	from	ADP	_	21 orbit	case
21	orbit	orbit	NOUN	Number=Sing	11 concerning	obl
22	.	.	PUNCT	_	1 Select	punct

#	verb	tense, mood	who	what, whom	where	other	roles by
1	select	imperative	you not said here	the response			vn obtain-13.5.2 «NP V NP»: agent=Agent response=Theme
2	is	present	the response			with the established facts; consistent property	tree rules
3	establish	participle					vn indicate-78-1-1 «NP V NP to be NP»: agent=Pivot
4	concern	gerund	the established facts not said here	the visibility of the Great Wall of China	orbit		vn amuse-31.1 «NP V NP»: agent=Stimulus visibility=Experiencer

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

Option 1 · ← Mova's choice

It is the sole artificial structure visible from orbit to the eye

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	7 visible	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	7 visible	cop
3	the	the	DET	Definite=Def PronType=Art	6 structure	det
4	sole	sole	ADJ	Degree=Pos	6 structure	amod
5	artificial	artificial	ADJ	Degree=Pos	6 structure	amod
6	structure	structure	NOUN	Number=Sing	7 visible	obl:unmarked
7	visible	visible	ADJ	Degree=Pos	root	root
8	from	from	ADP	_	9 orbit	case
9	orbit	orbit	NOUN	Number=Sing	7 visible	obl
10	to	to	ADP	_	12 eye	case
11	the	the	DET	Definite=Def PronType=Art	12 eye	det
12	eye	eye	NOUN	Number=Sing	7 visible	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It			orbit		to the eye; the sole artificial structure obl:unmarked; visible property	tree rules

Option 2 · ✓ the right answer

It is practically impossible to discern with the unaided eye

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	4 impossible	expl
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 impossible	cop
3	practically	practically	ADV	_	4 impossible	advmod
4	impossible	impossible	ADJ	Degree=Pos	root	root
5	to	to	PART	_	6 discern	mark
6	discern	discern	VERB	VerbForm=Inf	4 impossible	csubj
7	with	with	ADP	_	10 eye	case
8	the	the	DET	Definite=Def PronType=Art	10 eye	det
9	unaided	unaided	ADJ	Degree=Pos	10 eye	amod
10	eye	eye	NOUN	Number=Sing	6 discern	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present						impossible, practically property	tree rules
2	discern	to-infinitive						with the unaided eye	vn see-30.1-1 «NP V S_ING»: agent=Experiencer

Option 3

It is visible solely during the hours of darkness

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	3 visible	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 visible	cop
3	visible	visible	ADJ	Degree=Pos	root	root
4	solely	solely	ADV	_	3 visible	advmod
5	during	during	ADP	_	7 hours	case
6	the	the	DET	Definite=Def PronType=Art	7 hours	det
7	hours	hour	NOUN	Number=Plur	3 visible	obl
8	of	of	ADP	_	9 darkness	case
9	darkness	darkness	NOUN	Number=Sing	7 hours	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It				hour	solely, visible property	tree rules

Option 4

It is plainly visible from the surface of the Moon

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	It	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	4 visible	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 visible	cop
3	plainly	plainly	ADV	_	4 visible	advmod
4	visible	visible	ADJ	Degree=Pos	root	root
5	from	from	ADP	_	7 surface	case
6	the	the	DET	Definite=Def PronType=Art	7 surface	det
7	surface	surface	NOUN	Number=Sing	4 visible	obl
8	of	of	ADP	_	10 Moon	case
9	the	the	DET	Definite=Def PronType=Art	10 Moon	det
10	Moon	Moon	PROPN	Number=Sing	7 surface	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It			the surface of the Moon		plainly, visible property	tree rules

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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