Test 10 · ★ · Power stations and the grid

Why would a hydroelectric station pump water uphill at night when electricity is cheap?

Mova's choice: option 1 · The right answer: option 4 · wrong ✗ · Who acts: hydroelectric pump water · What happens: be

This is test 10 · ★ of lesson 32 «Power stations and the grid» of the technology 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	14 cheap	advmod
2	would	would	AUX	VerbForm=Fin	14 cheap	aux
3	a	a	DET	Definite=Ind PronType=Art	7 water	det
4	hydroelectric	hydroelectric	ADJ	Degree=Pos	7 water	amod
5	station	station	NOUN	Number=Sing	6 pump	compound
6	pump	pump	NOUN	Number=Sing	7 water	compound
7	water	water	NOUN	Number=Sing	14 cheap	nsubj
8	uphill	uphill	ADV	_	10 night	advmod
9	at	at	ADP	_	10 night	case
10	night	night	NOUN	Number=Sing	7 water	nmod
11	when	when	ADV	PronType=Int	14 cheap	advmod
12	electricity	electricity	NOUN	Number=Sing	14 cheap	nsubj
13	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	14 cheap	cop
14	cheap	cheap	ADJ	Degree=Pos	root	root
15	?	?	PUNCT	_	14 cheap	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	is	would	a hydroelectric pump water at night					cheap 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

To clean the water in the lake

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	To	to	PART	_	2 clean	mark
2	clean	clean	VERB	Mood=Imp VerbForm=Fin	root	root
3	the	the	DET	Definite=Def PronType=Art	4 water	det
4	water	water	NOUN	Number=Sing	2 clean	obj
5	in	in	ADP	_	7 lake	case
6	the	the	DET	Definite=Def PronType=Art	7 lake	det
7	lake	lake	NOUN	Number=Sing	2 clean	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	clean	to-infinitive		the water		the lake			vn other_cos-45.4 «NP V NP.patient»: agent=Agent water=Patient

Option 2

To stop the lake freezing over on the coldest winter nights of the year

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	To	to	PART	_	2 stop	mark
2	stop	stop	VERB	Mood=Imp VerbForm=Fin	root	root
3	the	the	DET	Definite=Def PronType=Art	4 lake	det
4	lake	lake	NOUN	Number=Sing	2 stop	obj
5	freezing	freeze	VERB	VerbForm=Ger	4 lake	acl
6	over	over	ADV	_	5 freezing	advmod
7	on	on	ADP	_	11 nights	case
8	the	the	DET	Definite=Def PronType=Art	11 nights	det
9	coldest	cold	ADJ	Degree=Sup	11 nights	amod
10	winter	winter	NOUN	Number=Sing	11 nights	compound
11	nights	night	NOUN	Number=Plur	5 freezing	obl
12	of	of	ADP	_	14 year	case
13	the	the	DET	Definite=Def PronType=Art	14 year	det
14	year	year	NOUN	Number=Sing	11 nights	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	stop	to-infinitive		the lake					vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality lake=Eventuality
2	freeze over	gerund	the lake not said here				night	over property	vn other_cos-45.4-1 «NP.patient V»: agent=Patient

Option 3

To make the dam heavier

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	To	to	PART	_	2 make	mark
2	make	make	VERB	Mood=Imp VerbForm=Fin	root	root
3	the	the	DET	Definite=Def PronType=Art	4 dam	det
4	dam	dam	NOUN	Number=Sing	2 make	obj
5	heavier	heavy	ADJ	Degree=Cmp	2 make	xcomp

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	make	to-infinitive		the dam				heavy property	vn build-26.1-1 «NP.asset V NP»: agent=Asset dam=Product

Option 4 · ✓ the right answer

To let it run down through turbines later when more is needed

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	To	to	PART	_	2 let	mark
2	let	let	VERB	Mood=Imp VerbForm=Fin	root	root
3	it	it	PRON	Case=Acc Gender=Neut Number=Sing Person=3 PronType=Prs	2 let	obj
4	run	run	VERB	VerbForm=Inf	2 let	xcomp
5	down	down	ADP	_	4 run	compound:prt
6	through	through	ADP	_	7 turbines	case
7	turbines	turbine	NOUN	Number=Plur	4 run	obl
8	later	late	ADV	Degree=Cmp	2 let	advmod
9	when	when	ADV	PronType=Int	12 needed	advmod
10	more	more	ADJ	Degree=Cmp	12 needed	nsubj:pass
11	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	12 needed	aux:pass
12	needed	need	VERB	Tense=Past VerbForm=Part Voice=Pass	2 let	advcl

#	verb	tense, mood	what, whom	where	other	roles by
1	let	to-infinitive	it		late property	tree rules
2	run down	infinitive		turbines		vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme through turbine=Trajectory
3	need	present · passive	more			vn want-32.1-1-1 «NP V NP ADV»: subject=Theme

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/technology/32-power-stations-and-the-grid/t10/