Test 10 · ★ · Melting, freezing, boiling and condensing

Why do frozen water pipes sometimes burst in winter?

Mova's choice: option 1 · The right answer: option 1 · right ✓ · Who acts: frozen water pipes · What happens: freeze, burst

This is test 10 · ★ of lesson 5 «Melting, freezing, boiling and condensing» of the chemistry 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	3 frozen	advmod
2	do	do	AUX	Mood=Ind Number=Sing Person=1 Tense=Pres VerbForm=Fin	3 frozen	aux
3	frozen	freeze	VERB	Tense=Past VerbForm=Part Voice=Pass	5 pipes	amod
4	water	water	NOUN	Number=Sing	5 pipes	compound
5	pipes	pipe	NOUN	Number=Plur	7 burst	nsubj
6	sometimes	sometimes	ADV	PronType=Ind	7 burst	advmod
7	burst	burst	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
8	in	in	ADP	_	9 winter	case
9	winter	winter	NOUN	Number=Sing	7 burst	obl
10	?	?	PUNCT	_	7 burst	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	freeze	present · do-support							vn other_cos-45.4-1 «NP.patient V»: agent=Patient
2	burst	present	frozen water pipes				winter	sometimes property	vn appear-48.1.1 «NP V»: agent=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.

The options

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

Water expands as it freezes and pushes the pipe apart

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Water	water	NOUN	Number=Sing	2 expands	nsubj
2	expands	expand	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
3	as	as	SCONJ	_	5 freezes	mark
4	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	5 freezes	nsubj
5	freezes	freeze	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	2 expands	advcl
6	and	and	CCONJ	_	7 pushes	cc
7	pushes	push	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	2 expands	conj
8	the	the	DET	Definite=Def PronType=Art	9 pipe	det
9	pipe	pipe	NOUN	Number=Sing	7 pushes	obj
10	apart	apart	ADV	_	7 pushes	advmod

#	verb	tense, mood	who	what, whom	other	roles by
1	expand	present	Water			vn other_cos-45.4 «NP.patient V»: agent=Patient
2	freeze	present	Water			vn other_cos-45.4-1 «NP.patient V»: agent=Patient
3	push	present	Water not said here	the pipe	apart property	vn carry-11.4-1-1 «NP V NP»: agent=Agent pipe=Theme

Option 2

Frozen water gets heavier and drops

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Frozen	frozen	ADJ	Degree=Pos	2 water	amod
2	water	water	NOUN	Number=Sing	3 gets	nsubj
3	gets	get	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	heavier	heavy	ADJ	Degree=Cmp	3 gets	xcomp
5	and	and	CCONJ	_	6 drops	cc
6	drops	drop	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 gets	conj

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	get	present	Frozen water					heavy property	vn comprehend-87.2-1 «NP V S_ING»: agent=Experiencer
2	drop	present	Frozen water not said here						vn roll-51.3.1 «NP.theme V»: agent=Theme

Option 3

Cold metal turns to powder

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Cold	cold	ADJ	Degree=Pos	2 metal	amod
2	metal	metal	NOUN	Number=Sing	3 turns	nsubj
3	turns	turn	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	root	root
4	to	to	PART	_	5 powder	mark
5	powder	powder	VERB	VerbForm=Inf	3 turns	xcomp

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	turn	present	Cold metal						tree rules
2	powder	to-infinitive	Cold metal not said here						vn braid-41.2.2 «NP V NP»: agent=Agent

Option 4

Ice is very sharp and cuts the pipe open from inside

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Ice	ice	NOUN	Number=Sing	4 sharp	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 sharp	cop
3	very	very	ADV	_	4 sharp	advmod
4	sharp	sharp	ADJ	Degree=Pos	root	root
5	and	and	CCONJ	_	6 cuts	cc
6	cuts	cut	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 sharp	conj
7	the	the	DET	Definite=Def PronType=Art	8 pipe	det
8	pipe	pipe	NOUN	Number=Sing	6 cuts	obj
9	open	open	ADJ	Degree=Pos	6 cuts	xcomp
10	from	from	ADP	_	11 inside	case
11	inside	inside	ADV	_	6 cuts	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	present	Ice					sharp property	tree rules
2	cut	present	Ice not said here	the pipe				open property	vn build-26.1-1 «NP.asset V PP»: agent=Asset pipe=Product from inside=Material

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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