Snakes and lizards, sentence 9

Pythons and boas are constrictors that squeeze prey so its blood stops flowing, and the reticulated python, over 6 metres, is the longest snake.

Who acts: Pythons, constrictors, blood, reticulated python · What happens: be, squeeze, stop, flow, reticulate · To what, where: constrictors, prey, longest snake

This is a sentence of the lesson «Snakes and lizards» of the biology 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 (Pythons, constrictors, blood, reticulated python), 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	Pythons	python	NOUN	Number=Plur	5 constrictors	nsubj
2	and	and	CCONJ	_	3 boas	cc
3	boas	boa	NOUN	Number=Plur	1 Pythons	conj
4	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	5 constrictors	cop
5	constrictors	constrictor	NOUN	Number=Plur	root	root
6	that	that	PRON	PronType=Rel	7 squeeze	nsubj
7	squeeze	squeeze	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	5 constrictors	acl:relcl
8	prey	prey	NOUN	Number=Sing	7 squeeze	obj
9	so	so	SCONJ	_	12 stops	mark
10	its	its	PRON	Case=Gen Gender=Neut Number=Sing Person=3 Poss=Yes PronType=Prs	11 blood	nmod:poss
11	blood	blood	NOUN	Number=Sing	12 stops	nsubj
12	stops	stop	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	7 squeeze	advcl
13	flowing	flow	VERB	VerbForm=Ger	12 stops	xcomp
14	,	,	PUNCT	_	27 snake	punct
15	and	and	CCONJ	_	27 snake	cc
16	the	the	DET	Definite=Def PronType=Art	18 python	det
17	reticulated	reticulate	VERB	Tense=Past VerbForm=Part Voice=Pass	18 python	amod
18	python	python	NOUN	Number=Sing	27 snake	nsubj
19	,	,	PUNCT	_	22 metres	punct
20	over	over	ADV	_	21 6	advmod
21	6	6	NUM	NumForm=Digit NumType=Card	22 metres	nummod
22	metres	metre	NOUN	Number=Plur	18 python	appos
23	,	,	PUNCT	_	27 snake	punct
24	is	be	AUX	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	27 snake	cop
25	the	the	DET	Definite=Def PronType=Art	27 snake	det
26	longest	long	ADJ	Degree=Sup	27 snake	amod
27	snake	snake	NOUN	Number=Sing	5 constrictors	conj
28	.	.	PUNCT	_	5 constrictors	punct

Pragmatics

form: statement
act: assert
voice: narrator
polarity: none
teacher: kept the draft

#	verb	tense, mood	who	what, whom	roles by
1	is a	present	Pythons and boas	constrictors and the longest snake	tree rules
2	squeeze	present	constrictors and the longest snake	prey	vn push-12-1-1 «NP V NP»: agent=Agent prey=Theme
3	stop	present	prey's blood		vn stop-55.4-1-1 «NP V S_ING»: agent=Affector clause=Eventuality
4	flow	gerund	prey's blood not said here		vn appear-48.1.1 «NP V»: agent=Theme
5	reticulate	participle			tree rules
6	is a	present	the reticulated python	the longest snake	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:biology:030-snakes-and-lizards.lesson:9.

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): R6-punct-agree ×1, R7-rel-agree ×2. 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/biology/30-snakes-and-lizards/9/