--- title: Limpets graze algae under water and clamp tight when the tide goes o… — Coral reefs, rockpools and the seashore · tree and pragmatics description: 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. A sentence of the lesson «Coral reefs, rockpools and the seashore» of the biology cours --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/9-coral-reefs-rockpools-and-the-seashore/15/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [Coral reefs, rockpools and the seashore](https://md.mova.elamur.ai/free/en/corpora/school/biology/9-coral-reefs-rockpools-and-the-seashore/) / 15 # 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 {#tree} ```conllu # sent_id = school:biology:009-coral-reefs-rockpools-and-the-seashore.lesson:15 # text = 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. # source = school lesson (ours) # course = biology # lesson = 009-coral-reefs-rockpools-and-the-seashore.lesson # annotation = 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 1 Limpets limpet NOUN NNS Number=Plur 2 nsubj _ _ 2 graze graze VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 algae alga NOUN NNS Number=Plur 2 obj _ _ 4 under under ADP IN _ 5 case _ _ 5 water water NOUN NN Number=Sing 2 obl _ Agree=R5-strong|Haiku=3:nmod 6 and and CCONJ CC _ 7 cc _ _ 7 clamp clamp VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 2 conj _ _ 8 tight tight ADV RB _ 7 advmod _ _ 9 when when SCONJ WRB _ 12 mark _ _ 10 the the DET DT Definite=Def|PronType=Art 11 det _ _ 11 tide tide NOUN NN Number=Sing 12 nsubj _ _ 12 goes go VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ Agree=R5-strong|Haiku=2:advcl 13 out out ADP RP _ 12 compound:prt _ _ 14 , , PUNCT , _ 15 punct _ _ 15 return return VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 2 conj _ Agree=R8-pos-agree|Haiku=2:conj|HaikuPos=VERB:VB:VerbForm=Inf 16 to to ADP IN _ 20 case _ _ 17 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 20 nmod:poss _ _ 18 own own ADJ JJ Degree=Pos 20 amod _ _ 19 home home NOUN NN Number=Sing 20 compound _ _ 20 scar scar NOUN NN Number=Sing 15 obl _ _ 21 on on ADP IN _ 23 case _ _ 22 the the DET DT Definite=Def|PronType=Art 23 det _ _ 23 rock rock NOUN NN Number=Sing 20 nmod _ _ 24 , , PUNCT , _ 29 punct _ _ 25 and and CCONJ CC _ 29 cc _ _ 26 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 27 nmod:poss _ _ 27 teeth tooth NOUN NNS Number=Plur 29 nsubj _ _ 28 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 29 cop _ _ 29 one one NUM CD NumForm=Word|NumType=Card 2 conj _ _ 30 of of ADP IN _ 34 case _ _ 31 the the DET DT Definite=Def|PronType=Art 34 det _ _ 32 strongest strong ADJ JJS Degree=Sup 34 amod _ _ 33 natural natural ADJ JJ Degree=Pos 34 amod _ _ 34 materials material NOUN NNS Number=Plur 29 nmod _ _ 35 known know VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 34 acl _ _ 36 . . PUNCT . _ 2 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: assert - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | 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](https://creativecommons.org/licenses/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](https://md.mova.elamur.ai/free/en/releases/0.4/). - ← previous: [Coral reefs, rockpools and the seashore, 14](https://md.mova.elamur.ai/free/en/corpora/school/biology/9-coral-reefs-rockpools-and-the-seashore/14/) - next →: [Coral reefs, rockpools and the seashore, 16](https://md.mova.elamur.ai/free/en/corpora/school/biology/9-coral-reefs-rockpools-and-the-seashore/16/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/9-coral-reefs-rockpools-and-the-seashore/)