Balance in a food web, sentence 15
Sea otters protect kelp forests by eating the sea urchins that eat kelp.
Who acts: Sea otters, sea urchins · What happens: protect, eat · To what, where: kelp forests, sea urchins, kelp
This is a sentence of the lesson «Balance in a food web» of the world 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 (Sea otters, sea urchins), 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 | Sea | sea | NOUN | Number=Sing | 2 otters | compound |
| 2 | otters | otter | NOUN | Number=Plur | 3 protect | nsubj |
| 3 | protect | protect | VERB | Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin | root | root |
| 4 | kelp | kelp | NOUN | Number=Sing | 5 forests | compound |
| 5 | forests | forest | NOUN | Number=Plur | 3 protect | obj |
| 6 | by | by | SCONJ | _ | 7 eating | mark |
| 7 | eating | eat | VERB | Tense=Pres VerbForm=Part | 3 protect | advcl |
| 8 | the | the | DET | Definite=Def PronType=Art | 10 urchins | det |
| 9 | sea | sea | NOUN | Number=Sing | 10 urchins | compound |
| 10 | urchins | urchin | NOUN | Number=Plur | 7 eating | obj |
| 11 | that | that | PRON | PronType=Rel | 12 eat | nsubj |
| 12 | eat | eat | VERB | Mood=Ind Number=Plur Person=3 Tense=Pres VerbForm=Fin | 10 urchins | acl:relcl |
| 13 | kelp | kelp | NOUN | Number=Sing | 12 eat | obj |
| 14 | . | . | PUNCT | _ | 3 protect | punct |
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 | protect | present | Sea otters | kelp forests | vn defend-72.3 «NP V NP»: agent=Agent forest=Beneficiary | ||||
| 2 | eat | gerund | Sea otters not said here | the sea urchins | vn eat-39.1-1 «NP V NP»: agent=Agent urchin=Patient | ||||
| 3 | eat | present | the sea urchins | kelp | vn eat-39.1-1 «NP V NP»: agent=Agent kelp=Patient |
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:world:030-balance-in-food-webs.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): no change. 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/world/30-balance-in-food-webs/15/