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Exam question 3 · Balance: the centre of gravity

It is given that two persons of unequal weight are to balance upon a seesaw. Determine the requisite disposition of the heavier person.

Mova's choice: option 2 · The right answer: option 2 · right ✓ · Who acts: two persons, you · What happens: give, be, determine · To what, where: It, requisite disposition

This is exam question 3 of lesson 8 «Balance: the centre of gravity» of the physics 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

Sentence 1: It is given that two persons of unequal weight are to balance upon a seesaw.

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 given	nsubj:pass
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 given	aux:pass
3	given	give	VERB	Tense=Past VerbForm=Part Voice=Pass	root	root
4	that	that	SCONJ	_	12 balance	mark
5	two	two	NUM	NumForm=Word NumType=Card	6 persons	nummod
6	persons	person	NOUN	Number=Plur	12 balance	nsubj
7	of	of	ADP	_	9 weight	case
8	unequal	unequal	ADJ	Degree=Pos	9 weight	amod
9	weight	weight	NOUN	Number=Sing	6 persons	nmod
10	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	12 balance	cop
11	to	to	PART	_	12 balance	mark
12	balance	balance	VERB	VerbForm=Inf	3 given	advcl
13	upon	upon	ADP	_	15 seesaw	case
14	a	a	DET	Definite=Ind PronType=Art	15 seesaw	det
15	seesaw	seesaw	NOUN	Number=Sing	12 balance	obl
16	.	.	PUNCT	_	3 given	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	give	present · passive		It					vn give-13.1-1 «NP V NP»: subject=Theme
2	is	present	two persons of unequal weight					upon a seesaw; balance 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.

Sentence 2: Determine the requisite disposition of the heavier person.

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Determine	determine	VERB	Mood=Imp VerbForm=Fin	root	root
2	the	the	DET	Definite=Def PronType=Art	4 disposition	det
3	requisite	requisite	ADJ	Degree=Pos	4 disposition	amod
4	disposition	disposition	NOUN	Number=Sing	1 Determine	obj
5	of	of	ADP	_	8 person	case
6	the	the	DET	Definite=Def PronType=Art	8 person	det
7	heavier	heavy	ADJ	Degree=Cmp	8 person	amod
8	person	person	NOUN	Number=Sing	4 disposition	nmod
9	.	.	PUNCT	_	1 Determine	punct

#	verb	tense, mood	who	what, whom	to whom	where	when	other	roles by
1	determine	imperative	you not said here	the requisite disposition of the heavier person					vn discover-84 «NP V NP»: agent=Agent disposition=Topic

The options

Option 1

Directly above the pivot itself

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Directly	directly	ADV	_	4 pivot	advmod
2	above	above	ADP	_	4 pivot	case
3	the	the	DET	Definite=Def PronType=Art	4 pivot	det
4	pivot	pivot	NOUN	Number=Sing	root	root
5	itself	itself	PRON	Case=Acc Gender=Neut Number=Sing Person=3 PronType=Emp Reflex=Yes	4 pivot	nmod:unmarked

The frames reader finds no event or fact in this sentence.

Option 2 · ← Mova's choice · ✓ the right answer

Nearer to the pivot than the lighter person

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Nearer	near	ADJ	Degree=Cmp	root	root
2	to	to	ADP	_	4 pivot	case
3	the	the	DET	Definite=Def PronType=Art	4 pivot	det
4	pivot	pivot	NOUN	Number=Sing	1 Nearer	obl
5	than	than	ADP	_	8 person	case
6	the	the	DET	Definite=Def PronType=Art	8 person	det
7	lighter	light	ADJ	Degree=Cmp	8 person	amod
8	person	person	NOUN	Number=Sing	1 Nearer	obl

The frames reader finds no event or fact in this sentence.

Option 3

Further from the pivot than the lighter person

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Further	further	ADV	_	4 pivot	advmod
2	from	from	ADP	_	4 pivot	case
3	the	the	DET	Definite=Def PronType=Art	4 pivot	det
4	pivot	pivot	NOUN	Number=Sing	root	root
5	than	than	ADP	_	8 person	case
6	the	the	DET	Definite=Def PronType=Art	8 person	det
7	lighter	light	ADJ	Degree=Cmp	8 person	amod
8	person	person	NOUN	Number=Sing	4 pivot	nmod

The frames reader finds no event or fact in this sentence.

Option 4

At an equal distance from the pivot

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	At	at	ADP	_	4 distance	case
2	an	a	DET	Definite=Ind PronType=Art	4 distance	det
3	equal	equal	ADJ	Degree=Pos	4 distance	amod
4	distance	distance	NOUN	Number=Sing	root	root
5	from	from	ADP	_	7 pivot	case
6	the	the	DET	Definite=Def PronType=Art	7 pivot	det
7	pivot	pivot	NOUN	Number=Sing	4 distance	nmod

The frames reader finds no event or fact in this sentence.

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/8-balance-the-centre-of-gravity/e3/