Test 9 · ★★ · Black holes

Which is true about a supermassive black hole?

Mova's choice: option 1 · The right answer: option 4 · wrong ✗ · What happens: be

This is test 9 · ★★ of lesson 25 «Black holes» of the space 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	Which	which	PRON	PronType=Rel	3 true	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 true	cop
3	true	true	ADJ	Degree=Pos	root	root
4	about	about	ADP	_	8 hole	case
5	a	a	DET	Definite=Ind PronType=Art	8 hole	det
6	supermassive	supermassive	ADJ	Degree=Pos	8 hole	amod
7	black	black	ADJ	Degree=Pos	8 hole	amod
8	hole	hole	NOUN	Number=Sing	3 true	obl
9	?	?	PUNCT	_	3 true	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present						about a supermassive black hole; true property	tree rules

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 no heavier than a planet

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 heavier	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 heavier	cop
3	no	no	ADV	_	4 heavier	advmod
4	heavier	heavy	ADJ	Degree=Cmp	root	root
5	than	than	ADP	_	7 planet	case
6	a	a	DET	Definite=Ind PronType=Art	7 planet	det
7	planet	planet	NOUN	Number=Sing	4 heavier	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	not is	present	It					than a planet; heavy property	tree rules

Option 2

It only forms in empty space

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 forms	nsubj
2	only	only	ADV	_	3 forms	advmod
3	forms	form	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	in	in	ADP	_	6 space	case
5	empty	empty	ADJ	Degree=Pos	6 space	amod
6	space	space	NOUN	Number=Sing	3 forms	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	form	present	It			empty space			vn appear-48.1.1 «NP V PP.location»: agent=Theme in space=Location

Option 3

It sits deep at the centre of the Earth, inside the core

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 sits	nsubj
2	sits	sit	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	deep	deep	ADJ	Degree=Pos	2 sits	xcomp
4	at	at	ADP	_	6 centre	case
5	the	the	DET	Definite=Def PronType=Art	6 centre	det
6	centre	centre	NOUN	Number=Sing	2 sits	obl
7	of	of	ADP	_	9 Earth	case
8	the	the	DET	Definite=Def PronType=Art	9 Earth	det
9	Earth	Earth	PROPN	Number=Sing	6 centre	nmod
10	,	,	PUNCT	_	13 core	punct
11	inside	inside	ADP	_	13 core	case
12	the	the	DET	Definite=Def PronType=Art	13 core	det
13	core	core	NOUN	Number=Sing	2 sits	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	sit	present	It			the centre of the Earth		inside the core; deep property	vn assuming_position-50 «NP V PP.location»: agent=Agent at centre=Location

Option 4 · ✓ the right answer

It can be billions of times the Sun's mass

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 billions	nsubj
2	can	can	AUX	VerbForm=Fin	4 billions	aux
3	be	be	AUX	VerbForm=Inf	4 billions	cop
4	billions	billion	NOUN	Number=Plur	root	root
5	of	of	ADP	_	6 times	case
6	times	time	NOUN	Number=Plur	4 billions	nmod
7	the	the	DET	Definite=Def PronType=Art	8 Sun	det
8	Sun	Sun	PROPN	Number=Sing	10 mass	nmod:poss
9	's	's	PART	_	8 Sun	case
10	mass	mass	NOUN	Number=Sing	6 times	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is a	can	It	billions			time		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.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/space/25-black-holes/t9/