Mirrors, rainbows and the blue sky, sentence 13

The sky is blue because the gas in the air scatters blue light much more than red; from the Moon, with no air, the sky is black even by day.

Who acts: sky, gas · What happens: be, scatter · To what, where: blue light, Moon

This is a sentence of the lesson «Mirrors, rainbows and the blue sky» 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 (sky, gas), 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	The	the	DET	Definite=Def PronType=Art	2 sky	det
2	sky	sky	NOUN	Number=Sing	4 blue	nsubj
3	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 blue	cop
4	blue	blue	ADJ	Degree=Pos	root	root
5	because	because	SCONJ	_	11 scatters	mark
6	the	the	DET	Definite=Def PronType=Art	7 gas	det
7	gas	gas	NOUN	Number=Sing	11 scatters	nsubj
8	in	in	ADP	_	11 scatters	case
9	the	the	DET	Definite=Def PronType=Art	10 air	det
10	air	air	NOUN	Number=Sing	7 gas	nmod
11	scatters	scatter	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	4 blue	advcl
12	blue	blue	ADJ	Degree=Pos	13 light	amod
13	light	light	NOUN	Number=Sing	11 scatters	obj
14	much	much	ADV	_	15 more	advmod
15	more	more	ADV	Degree=Cmp	11 scatters	advmod
16	than	than	ADP	_	17 red	case
17	red	red	ADJ	Degree=Pos	15 more	obl
18	;	;	PUNCT	_	30 black	punct
19	from	from	ADP	_	21 Moon	case
20	the	the	DET	Definite=Def PronType=Art	21 Moon	det
21	Moon	Moon	PROPN	Number=Sing	30 black	obl
22	,	,	PUNCT	_	25 air	punct
23	with	with	ADP	_	25 air	case
24	no	no	DET	PronType=Neg	25 air	det
25	air	air	NOUN	Number=Sing	21 Moon	conj
26	,	,	PUNCT	_	21 Moon	punct
27	the	the	DET	Definite=Def PronType=Art	28 sky	det
28	sky	sky	NOUN	Number=Sing	30 black	nsubj
29	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	30 black	cop
30	black	black	ADJ	Degree=Pos	4 blue	parataxis
31	even	even	ADV	_	33 day	advmod
32	by	by	ADP	_	33 day	case
33	day	day	NOUN	Number=Sing	30 black	obl
34	.	.	PUNCT	_	4 blue	punct

Pragmatics

No stored speech act for this sentence.

#	verb	tense, mood	who	what, whom	where	when	other	roles by
1	is	present	the sky				blue property	tree rules
2	scatter	present	the gas the air	blue light				vn spray-9.7-1 «NP V NP.theme»: agent=Agent light=Theme
3	is	present	the sky		the Moon and no air	day	black 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.

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:021-mirrors-rainbows-and-the-blue-sky.lesson:13.

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 ×1. 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/21-mirrors-rainbows-and-the-blue-sky/13/