Coral reefs, rockpools and the seashore, sentence 15

Limpets graze algae under water and clamp tight when the tide goes out, return to their own home scar on the rock, and their teeth are one of the strongest natural materials known.

Who acts: Limpets, tide, teeth · What happens: graze, clamp, go out, return, be, know · To what, where: algae, water, one, strongest natural materials, rock

This is a sentence of the lesson «Coral reefs, rockpools and the seashore» 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 (Limpets, tide, teeth), 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	Limpets	limpet	NOUN	Number=Plur	2 graze	nsubj
2	graze	graze	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	root	root
3	algae	alga	NOUN	Number=Plur	2 graze	obj
4	under	under	ADP	_	5 water	case
5	water	water	NOUN	Number=Sing	2 graze	obl
6	and	and	CCONJ	_	7 clamp	cc
7	clamp	clamp	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	2 graze	conj
8	tight	tight	ADV	_	7 clamp	advmod
9	when	when	SCONJ	_	12 goes	mark
10	the	the	DET	Definite=Def PronType=Art	11 tide	det
11	tide	tide	NOUN	Number=Sing	12 goes	nsubj
12	goes	go	VERB	Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin	7 clamp	advcl
13	out	out	ADP	_	12 goes	compound:prt
14	,	,	PUNCT	_	15 return	punct
15	return	return	VERB	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	2 graze	conj
16	to	to	ADP	_	20 scar	case
17	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	20 scar	nmod:poss
18	own	own	ADJ	Degree=Pos	20 scar	amod
19	home	home	NOUN	Number=Sing	20 scar	compound
20	scar	scar	NOUN	Number=Sing	15 return	obl
21	on	on	ADP	_	23 rock	case
22	the	the	DET	Definite=Def PronType=Art	23 rock	det
23	rock	rock	NOUN	Number=Sing	20 scar	nmod
24	,	,	PUNCT	_	29 one	punct
25	and	and	CCONJ	_	29 one	cc
26	their	their	PRON	Case=Gen Number=Plur Person=3 Poss=Yes PronType=Prs	27 teeth	nmod:poss
27	teeth	tooth	NOUN	Number=Plur	29 one	nsubj
28	are	be	AUX	Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin	29 one	cop
29	one	one	NUM	NumForm=Word NumType=Card	2 graze	conj
30	of	of	ADP	_	34 materials	case
31	the	the	DET	Definite=Def PronType=Art	34 materials	det
32	strongest	strong	ADJ	Degree=Sup	34 materials	amod
33	natural	natural	ADJ	Degree=Pos	34 materials	amod
34	materials	material	NOUN	Number=Plur	29 one	nmod
35	known	know	VERB	Tense=Past VerbForm=Part Voice=Pass	34 materials	acl
36	.	.	PUNCT	_	2 graze	punct

Pragmatics

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

#	verb	tense, mood	who	what, whom	where	other	roles by
1	graze	present	Limpets	algae	water		vn touch-20-1 «NP V NP»: agent=Agent alga=Experiencer
2	clamp	present	Limpets not said here			tight property	vn tape-22.4 «NP V ADV-Middle»: agent=Patient
3	go out	present	the tide				vn interact-36.6 «NP V»: agent=Agent
4	return	present	Limpets not said here			to limpets's own home scar on the rock result	vn convert-26.6.2-1 «NP V S_ING»: agent=Patient to scar=Result
5	is a	present	limpets's teeth	one		of the strongest natural materials	tree rules
6	know	participle		the strongest natural materials not said here			vn comprehend-87.2-1-1-1 «NP V»: agent=Experiencer
7	scar		limpets = limpet		the rock		nom scar «state transitive»: poss=agent on=place

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:009-coral-reefs-rockpools-and-the-seashore.lesson:15.

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, R8-pos-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/biology/9-coral-reefs-rockpools-and-the-seashore/15/