Exam question 4 · Metals and what they're good for

Ascertain the principal reason for which titanium is employed in hip replacements.

Mova's choice: option 3 · The right answer: option 3 · right ✓ · Who acts: you · What happens: ascertain, employ · To what, where: principal reason, titanium, hip replacements

This is exam question 4 of lesson 31 «Metals and what they're good for» of the chemistry 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	Ascertain	ascertain	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	4 reason	det
3	principal	principal	ADJ	Degree=Pos	4 reason	amod
4	reason	reason	NOUN	Number=Sing	1 Ascertain	obj
5	for	for	ADP	_	6 which	case
6	which	which	PRON	PronType=Rel	9 employed	obl
7	titanium	titanium	NOUN	Number=Sing	9 employed	nsubj:pass
8	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	9 employed	aux:pass
9	employed	employ	VERB	Tense=Past VerbForm=Part Voice=Pass	4 reason	acl:relcl
10	in	in	ADP	_	12 replacements	case
11	hip	hip	NOUN	Number=Sing	12 replacements	compound
12	replacements	replacement	NOUN	Number=Plur	9 employed	obl
13	.	.	PUNCT	_	1 Ascertain	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	ascertain	imperative	you not said here	the principal reason					vn discover-84 «NP V NP»: agent=Agent reason=Topic
2	employ	present · passive		titanium		hip replacements		for the principal reason	vn use-105.1 «NP V NP PP.predicate»: subject=Theme for which=Eventuality

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

It is the most magnetic of metals

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	5 magnetic	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	5 magnetic	cop
3	the	the	DET	Definite=Def PronType=Art	5 magnetic	det
4	most	most	ADV	Degree=Sup	5 magnetic	advmod
5	magnetic	magnetic	ADJ	Degree=Pos	root	root
6	of	of	ADP	_	7 metals	case
7	metals	metal	NOUN	Number=Plur	5 magnetic	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					of metals; magnetic property	tree rules

Option 2

It is luminous in 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 luminous	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 luminous	cop
3	luminous	luminous	ADJ	Degree=Pos	root	root
4	in	in	ADP	_	5 darkness	case
5	darkness	darkness	NOUN	Number=Sing	3 luminous	obl

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

Option 3 · ← Mova's choice · ✓ the right answer

It is well tolerated by the human body

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 tolerated	nsubj:pass
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 tolerated	aux:pass
3	well	well	ADV	Degree=Pos	4 tolerated	advmod
4	tolerated	tolerate	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
5	by	by	ADP	_	8 body	case
6	the	the	DET	Definite=Def PronType=Art	8 body	det
7	human	human	ADJ	Degree=Pos	8 body	amod
8	body	body	NOUN	Number=Sing	4 tolerated	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	tolerate	present · passive	the human body	It				well property	vn admire-31.2 «NP V NP»: agent=Experiencer subject=Stimulus

Option 4

It is the softest of metals

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 softest	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 softest	cop
3	the	the	DET	Definite=Def PronType=Art	4 softest	det
4	softest	soft	ADJ	Degree=Sup	root	root
5	of	of	ADP	_	6 metals	case
6	metals	metal	NOUN	Number=Plur	4 softest	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	It					of metals; soft 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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