Black holes, sentence 1

Its edge is the event horizon, a point of no return: like a waterfall, you can paddle safely far upstream, but once you go over the edge you can never come back.

Who acts: edge, you · What happens: be, paddle, go, not come back, point · To what, where: event horizon, edge, return

This is a sentence of the lesson «Black holes» of the space 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 (edge, you), 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	Its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	2 edge	nmod:poss
2	edge	edge	NOUN	Number=Sing	6 horizon	nsubj
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	6 horizon	cop
4	the	the	DET	Definite=Def PronType=Art	6 horizon	det
5	event	event	NOUN	Number=Sing	6 horizon	compound
6	horizon	horizon	NOUN	Number=Sing	root	root
7	,	,	PUNCT	_	9 point	punct
8	a	a	DET	Definite=Ind PronType=Art	9 point	det
9	point	point	NOUN	Number=Sing	6 horizon	appos
10	of	of	ADP	_	12 return	case
11	no	no	DET	PronType=Neg	12 return	det
12	return	return	NOUN	Number=Sing	9 point	nmod
13	:	:	PUNCT	_	20 paddle	punct
14	like	like	ADP	_	16 waterfall	case
15	a	a	DET	Definite=Ind PronType=Art	16 waterfall	det
16	waterfall	waterfall	NOUN	Number=Sing	20 paddle	obl
17	,	,	PUNCT	_	16 waterfall	punct
18	you	you	PRON	Case=Nom Person=2 PronType=Prs	20 paddle	nsubj
19	can	can	AUX	VerbForm=Fin	20 paddle	aux
20	paddle	paddle	VERB	VerbForm=Inf	6 horizon	parataxis
21	safely	safely	ADV	_	20 paddle	advmod
22	far	far	ADV	Degree=Pos	23 upstream	advmod
23	upstream	upstream	ADV	_	20 paddle	advmod
24	,	,	PUNCT	_	35 come	punct
25	but	but	CCONJ	_	35 come	cc
26	once	once	SCONJ	_	28 go	mark
27	you	you	PRON	Case=Nom Person=2 PronType=Prs	28 go	nsubj
28	go	go	VERB	Mood=Ind Number=Sing Person=2 Tense=Pres VerbForm=Fin	35 come	advcl
29	over	over	ADP	_	31 edge	case
30	the	the	DET	Definite=Def PronType=Art	31 edge	det
31	edge	edge	NOUN	Number=Sing	28 go	obl
32	you	you	PRON	Case=Nom Person=2 PronType=Prs	35 come	nsubj
33	can	can	AUX	VerbForm=Fin	35 come	aux
34	never	never	ADV	PronType=Neg	35 come	advmod
35	come	come	VERB	VerbForm=Inf	20 paddle	conj
36	back	back	ADV	_	35 come	advmod
37	.	.	PUNCT	_	6 horizon	punct

Pragmatics

form: statement
act: assert
voice: narrator
polarity: none
teacher: changed act=assert

#	verb	tense, mood	who	what, whom	where	other	roles by
1	is a	present	hole's edge	the event horizon			tree rules
2	paddle	can	you			like a waterfall; safely, upstream property	vn nonvehicle-51.4.2 «NP.agent V»: agent=Agent
3	go	present	you		the edge		vn escape-51.1-1 «NP V PP.initial_location»: agent=Theme over edge=Initial_Location
4	not come back	can	you				vn escape-51.1-1 «NP V»: agent=Theme
5	point			no return			nom point «cognition transitive»: of=patient

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:space:025-black-holes.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): no change. 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/space/25-black-holes/1/