Thunder, sirens and how fast sound travels, sentence 1

That is why you see the flash of lightning first and hear the thunder later; every three seconds of waiting means the storm is about a kilometre away.

Who acts: That, you, three seconds, storm, lightning · What happens: be, see, hear, mean, flash · To what, where: flash, thunder, kilometre · Speech: someone speaks here

This is a sentence of the lesson «Thunder, sirens and how fast sound travels» 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 (That, you, three seconds, storm), 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	That	that	PRON	Number=Sing PronType=Dem	3 why	nsubj
2	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 why	cop
3	why	why	ADV	PronType=Rel	root	root
4	you	you	PRON	Case=Nom Person=2 PronType=Prs	5 see	nsubj
5	see	see	VERB	Mood=Ind Number=Sing Person=2 Tense=Pres VerbForm=Fin	3 why	advcl:relcl
6	the	the	DET	Definite=Def PronType=Art	7 flash	det
7	flash	flash	NOUN	Number=Sing	5 see	obj
8	of	of	ADP	_	9 lightning	case
9	lightning	lightning	NOUN	Number=Sing	7 flash	nmod
10	first	first	ADV	NumForm=Word NumType=Ord	5 see	advmod
11	and	and	CCONJ	_	12 hear	cc
12	hear	hear	VERB	VerbForm=Inf	5 see	conj
13	the	the	DET	Definite=Def PronType=Art	14 thunder	det
14	thunder	thunder	NOUN	Number=Sing	12 hear	obj
15	later	late	ADV	Degree=Cmp	12 hear	advmod
16	;	;	PUNCT	_	19 seconds	punct
17	every	every	DET	PronType=Tot	19 seconds	det
18	three	three	NUM	NumForm=Word NumType=Card	19 seconds	nummod
19	seconds	second	NOUN	Number=Plur	22 means	nsubj
20	of	of	ADP	_	21 waiting	case
21	waiting	waiting	NOUN	Number=Sing	19 seconds	nmod
22	means	mean	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	3 why	parataxis
23	the	the	DET	Definite=Def PronType=Art	24 storm	det
24	storm	storm	NOUN	Number=Sing	28 kilometre	nsubj
25	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	28 kilometre	cop
26	about	about	ADV	_	28 kilometre	advmod
27	a	a	DET	Definite=Ind PronType=Art	28 kilometre	det
28	kilometre	kilometre	NOUN	Number=Sing	22 means	ccomp
29	away	away	ADV	_	28 kilometre	advmod
30	.	.	PUNCT	_	3 why	punct

Pragmatics

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

#	verb	tense, mood	who	what, whom	other	roles by
1	is	present	That		why property	tree rules
2	see	present	you	the flash of lightning	first property	vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer flash=Stimulus
3	hear	infinitive	you not said here	the thunder	late property	vn see-30.1-1-1 «NP V S»: agent=Experiencer thunder=Stimulus
4	mean	present	every three seconds of waiting			vn intend-61.2-1 «NP V S»: agent=Agent
5	is a	present	the storm	a kilometre	about, away property	tree rules
6	flash		lightning			nom flash «event intransitive»: of=agent

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:018-thunder-sirens-and-how-fast-sound-travels.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): R5-strong ×2, R7-rel-agree ×4. 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/18-thunder-sirens-and-how-fast-sound-travels/1/