Balance: the centre of gravity, sentence 1

Balance a ruler on one finger and it stays only when your finger is under its middle; stick clay on one end and the balancing point moves towards the clay.

Who acts: you, ruler, finger, balancing point · What happens: balance, stay, be, stick, move · To what, where: ruler, one finger, middle, clay, one end

This is a sentence of the lesson «Balance: the centre of gravity» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (you, ruler, finger, balancing point), what happens, when and where, as Mova's frames read it from the tree.

The tree

The words, one row each (CoNLL-U)

#	word	lemma	UPOS	features	head	relation
1	Balance	balance	VERB	Mood=Imp VerbForm=Fin	root	root
2	a	a	DET	Definite=Ind PronType=Art	3 ruler	det
3	ruler	ruler	NOUN	Number=Sing	1 Balance	obj
4	on	on	ADP	_	6 finger	case
5	one	one	NUM	NumForm=Word NumType=Card	6 finger	nummod
6	finger	finger	NOUN	Number=Sing	1 Balance	obl
7	and	and	CCONJ	_	9 stays	cc
8	it	it	PRON	Case=Nom Gender=Neut Number=Sing Person=3 PronType=Prs	9 stays	nsubj
9	stays	stay	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	1 Balance	conj
10	only	only	ADV	_	17 middle	advmod
11	when	when	ADV	_	17 middle	advmod
12	your	your	PRON	Case=Gen Person=2 Poss=Yes PronType=Prs	13 finger	nmod:poss
13	finger	finger	NOUN	Number=Sing	17 middle	nsubj
14	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	17 middle	cop
15	under	under	ADP	_	17 middle	case
16	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	17 middle	nmod:poss
17	middle	middle	NOUN	Number=Sing	9 stays	advcl
18	;	;	PUNCT	_	19 stick	punct
19	stick	stick	VERB	Mood=Imp VerbForm=Fin	1 Balance	parataxis
20	clay	clay	NOUN	Number=Sing	19 stick	obj
21	on	on	ADP	_	23 end	case
22	one	one	NUM	NumForm=Word NumType=Card	23 end	nummod
23	end	end	NOUN	Number=Sing	19 stick	obl
24	and	and	CCONJ	_	28 moves	cc
25	the	the	DET	Definite=Def PronType=Art	27 point	det
26	balancing	balance	NOUN	Number=Sing	27 point	compound
27	point	point	NOUN	Number=Sing	28 moves	nsubj
28	moves	move	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	19 stick	conj
29	towards	towards	ADP	_	31 clay	case
30	the	the	DET	Definite=Def PronType=Art	31 clay	det
31	clay	clay	NOUN	Number=Sing	28 moves	obl
32	.	.	PUNCT	_	1 Balance	punct

Pragmatics

form: command
act: request
voice: narrator
polarity: none
teacher: kept the draft

#	verb	tense, mood	who	what, whom	where	when	roles by
1	balance	imperative	you not said here	a ruler	one finger		vn spatial_configuration-47.6-1 «NP V NP.theme PP»: agent=Agent ruler=Theme on finger=Location
2	stay	present	ruler				vn exist-47.1 «NP V»: agent=Theme
3	is	present	your finger		finger's middle		tree rules
4	stick	infinitive		clay		on one end	vn spray-9.7-1 «NP V NP PP.destination»: agent=Agent clay=Theme on end=Destination
5	move	present	the balancing point		the clay		vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme towards clay=Trajectory

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.

Licence: CC BY-SA 4.0, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, mova-school-agreed-en.conllu) is part. The lessons were written for Mova's primary school. Sentence school:physics:008-balance-the-centre-of-gravity.lesson:1.

The tree: Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R2-punct-next ×1, R5-strong ×1, R7-rel-agree ×3. The frames are read from the tree by Mova's frames reader (prag) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the release 0.4.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/physics/8-balance-the-centre-of-gravity/1/