Test 11 · ★ · Compasses and the magnetic Earth

Which old discovery was first used by sailors nearly a thousand years ago?

Mova's choice: option 4 · The right answer: option 4 · right ✓ · Who acts: sailors · What happens: use · To what, where: old discovery

This is test 11 · ★ of lesson 30 «Compasses and the magnetic Earth» of the physics 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	6 used	obj
2	old	old	ADJ	Degree=Pos	3 discovery	amod
3	discovery	discovery	NOUN	Number=Sing	6 used	nsubj:pass
4	was	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Past VerbForm=Fin	6 used	aux:pass
5	first	first	ADV	NumForm=Word NumType=Ord	6 used	advmod
6	used	use	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
7	by	by	ADP	_	8 sailors	case
8	sailors	sailor	NOUN	Number=Plur	6 used	obl
9	nearly	nearly	ADV	_	11 thousand	advmod
10	a	a	DET	Definite=Ind PronType=Art	11 thousand	det
11	thousand	thousand	NUM	NumForm=Word NumType=Card	12 years	nummod
12	years	year	NOUN	Number=Plur	13 ago	obl:unmarked
13	ago	ago	ADV	_	6 used	advmod
14	?	?	PUNCT	_	6 used	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	use	past · passive	sailors	old discovery				ago, first 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

The radio weather forecast read out for ships at sea

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	The	the	DET	Definite=Def PronType=Art	4 forecast	det
2	radio	radio	NOUN	Number=Sing	4 forecast	compound
3	weather	weather	NOUN	Number=Sing	4 forecast	compound
4	forecast	forecast	NOUN	Number=Sing	root	root
5	read	read	VERB	Tense=Past VerbForm=Part Voice=Pass	4 forecast	acl
6	out	out	ADP	_	5 read	compound:prt
7	for	for	ADP	_	8 ships	case
8	ships	ship	NOUN	Number=Plur	5 read	obl
9	at	at	ADP	_	10 sea	case
10	sea	sea	NOUN	Number=Sing	5 read	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	read out	participle		the radio weather forecast not said here		sea		for ships	vn register-54.1-2-1 «NP V NP PP.value»: agent=Agent at sea=Value

Option 2

Satellite navigation worked out on a mobile phone

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Satellite	Satellite	PROPN	Number=Sing	2 navigation	compound
2	navigation	navigation	NOUN	Number=Sing	3 worked	nsubj
3	worked	work	VERB	Mood=Ind Number=Sing Person=3 Tense=Past VerbForm=Fin	root	root
4	out	out	ADP	_	3 worked	compound:prt
5	on	on	ADP	_	8 phone	case
6	a	a	DET	Definite=Ind PronType=Art	8 phone	det
7	mobile	mobile	ADJ	Degree=Pos	8 phone	amod
8	phone	phone	NOUN	Number=Sing	3 worked	obl

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	work out	past	Satellite navigation			a mobile phone			vn discover-84 «NP V how S»: agent=Agent

Option 3

A battery-powered torch for signalling to other ships

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	A	a	DET	Definite=Ind PronType=Art	5 torch	det
2	battery	battery	NOUN	Number=Sing	4 powered	compound
3	-	-	PUNCT	_	2 battery	punct
4	powered	power	VERB	Tense=Past VerbForm=Part Voice=Pass	5 torch	amod
5	torch	torch	NOUN	Number=Sing	root	root
6	for	for	ADP	_	7 signalling	case
7	signalling	signalling	NOUN	Number=Sing	5 torch	nmod
8	to	to	ADP	_	10 ships	case
9	other	other	ADJ	Degree=Pos	10 ships	amod
10	ships	ship	NOUN	Number=Plur	5 torch	nmod

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	power	participle							tree rules

Option 4 · ← Mova's choice · ✓ the right answer

A magnetised needle floating to point north

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	A	a	DET	Definite=Ind PronType=Art	3 needle	det
2	magnetised	magnetise	VERB	Tense=Past VerbForm=Part Voice=Pass	3 needle	amod
3	needle	needle	NOUN	Number=Sing	root	root
4	floating	float	VERB	VerbForm=Ger	3 needle	acl
5	to	to	PART	_	6 point	mark
6	point	point	VERB	VerbForm=Inf	4 floating	xcomp
7	north	north	ADV	_	6 point	advmod

#	verb	tense, mood	who	other	roles by
1	magnetise	participle			tree rules
2	float	gerund	a magnetised needle not said here		tree rules
3	point	to-infinitive	a magnetised needle not said here	north property	vn wink-40.3.1 «NP V»: agent=Agent

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/physics/30-compasses-and-the-magnetic-earth/t11/