Test 10 · ★★★ · Thinking like an astronomer

why do we only ever see one side of the moon

Mova's choice: option 2 · The right answer: option 3 · wrong ✗ · Who acts: we · What happens: see · To what, where: one side

This is test 10 · ★★★ of lesson 10 «Thinking like an astronomer» of the world 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.

The question

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	why	why	ADV	PronType=Int	6 see	advmod
2	do	do	AUX	Mood=Ind Number=Plur Person=1 Tense=Pres VerbForm=Fin	6 see	aux
3	we	we	PRON	Case=Nom Number=Plur Person=1 PronType=Prs	6 see	nsubj
4	only	only	ADV	_	6 see	advmod
5	ever	ever	ADV	PronType=Ind	6 see	advmod
6	see	see	VERB	VerbForm=Inf	root	root
7	one	one	NUM	NumForm=Word NumType=Card	8 side	nummod
8	side	side	NOUN	Number=Sing	6 see	obj
9	of	of	ADP	_	11 moon	case
10	the	the	DET	Definite=Def PronType=Art	11 moon	det
11	moon	moon	NOUN	Number=Sing	8 side	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	see	present · do-support	we	one side of the moon			ever		vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer side=Stimulus

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

The other side is always in the dark

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	3 side	det
2	other	other	ADJ	Degree=Pos	3 side	amod
3	side	side	NOUN	Number=Sing	8 dark	nsubj
4	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	8 dark	cop
5	always	always	ADV	PronType=Tot	8 dark	advmod
6	in	in	ADP	_	8 dark	case
7	the	the	DET	Definite=Def PronType=Art	8 dark	det
8	dark	dark	NOUN	Number=Sing	root	root

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	the other side			the dark		always property	tree rules

Option 2 · ← Mova's choice

The Earth blocks our view of the far side

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 Earth	det
2	Earth	Earth	PROPN	Number=Sing	3 blocks	nsubj
3	blocks	block	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	our	our	PRON	Case=Gen Number=Plur Person=1 Poss=Yes PronType=Prs	5 view	nmod:poss
5	view	view	NOUN	Number=Sing	3 blocks	obj
6	of	of	ADP	_	9 side	case
7	the	the	DET	Definite=Def PronType=Art	9 side	det
8	far	far	ADJ	Degree=Pos	9 side	amod
9	side	side	NOUN	Number=Sing	5 view	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	block	present	the Earth	our view of the far side					vn forbid-64.4-1 «NP V NP»: agent=Causer view=Theme
2	view		our	the far side					nom view «cognition transitive»: poss=agent of=patient

Option 3 · ✓ the right answer

It turns once in the same time it goes round us

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	2 turns	nsubj
2	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	once	once	ADV	NumForm=Word NumType=Mult	2 turns	advmod
4	in	in	ADP	_	7 time	case
5	the	the	DET	Definite=Def PronType=Art	7 time	det
6	same	same	ADJ	Degree=Pos	7 time	amod
7	time	time	NOUN	Number=Sing	2 turns	obl
8	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	9 goes	nsubj
9	goes	go	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	7 time	acl:relcl
10	round	round	ADV	_	9 goes	advmod
11	us	we	PRON	Case=Acc Number=Plur Person=1 PronType=Prs	9 goes	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	turn	present	It				time	once property	vn roll-51.3.1 «NP.theme V»: agent=Theme
2	go round	present	it	us				round property	vn meander-47.7 «PP.location V NP»: agent=Location time=Theme

Option 4

The Moon doesn't turn at all

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	2 Moon	det
2	Moon	Moon	PROPN	Number=Sing	5 turn	nsubj
3	does	do	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	5 turn	aux
4	n't	not	PART	Polarity=Neg	5 turn	advmod
5	turn	turn	VERB	VerbForm=Inf	root	root
6	at	at	ADP	_	7 all	case
7	all	all	DET	PronType=Tot	5 turn	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	not turn	present · do-support	the Moon			all			vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme at all=Trajectory

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/10-reasoning-about-space/t10/