Plate tectonics, sentence 14
The sea floor has stripes of rock magnetised in alternate directions, matching on both sides of ocean ridges, because the magnetic field flips now and then while new crust forms at the ridge.
Who acts: sea floor, magnetic field, new crust · What happens: have, magnetise, matching, flip, form · To what, where: stripes, alternate directions, sides, ridge
This is a sentence of the lesson «Plate tectonics» of the geography 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 floor, magnetic field, new crust), 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 | 3 floor | det |
| 2 | sea | sea | NOUN | Number=Sing | 3 floor | compound |
| 3 | floor | floor | NOUN | Number=Sing | 4 has | nsubj |
| 4 | has | have | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 5 | stripes | stripe | NOUN | Number=Plur | 4 has | obj |
| 6 | of | of | ADP | _ | 7 rock | case |
| 7 | rock | rock | NOUN | Number=Sing | 5 stripes | nmod |
| 8 | magnetised | magnetise | VERB | Tense=Past VerbForm=Part Voice=Pass | 5 stripes | acl |
| 9 | in | in | ADP | _ | 11 directions | case |
| 10 | alternate | alternate | ADJ | Degree=Pos | 11 directions | amod |
| 11 | directions | direction | NOUN | Number=Plur | 8 magnetised | obl |
| 12 | , | , | PUNCT | _ | 13 matching | punct |
| 13 | matching | matching | VERB | Tense=Pres VerbForm=Part | 8 magnetised | conj |
| 14 | on | on | ADP | _ | 16 sides | case |
| 15 | both | both | DET | PronType=Tot | 16 sides | det |
| 16 | sides | side | NOUN | Number=Plur | 13 matching | obl |
| 17 | of | of | ADP | _ | 19 ridges | case |
| 18 | ocean | ocean | NOUN | Number=Sing | 19 ridges | compound |
| 19 | ridges | ridge | NOUN | Number=Plur | 16 sides | nmod |
| 20 | , | , | PUNCT | _ | 25 flips | punct |
| 21 | because | because | SCONJ | _ | 25 flips | mark |
| 22 | the | the | DET | Definite=Def PronType=Art | 24 field | det |
| 23 | magnetic | magnetic | ADJ | Degree=Pos | 24 field | amod |
| 24 | field | field | NOUN | Number=Sing | 25 flips | nsubj |
| 25 | flips | flip | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 4 has | advcl |
| 26 | now | now | ADV | PronType=Dem | 25 flips | advmod |
| 27 | and | and | CCONJ | _ | 28 then | cc |
| 28 | then | then | ADV | PronType=Dem | 26 now | conj |
| 29 | while | while | SCONJ | _ | 32 forms | mark |
| 30 | new | new | ADJ | Degree=Pos | 31 crust | amod |
| 31 | crust | crust | NOUN | Number=Sing | 32 forms | nsubj |
| 32 | forms | form | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | 25 flips | advcl |
| 33 | at | at | ADP | _ | 35 ridge | case |
| 34 | the | the | DET | Definite=Def PronType=Art | 35 ridge | det |
| 35 | ridge | ridge | NOUN | Number=Sing | 32 forms | obl |
| 36 | . | . | PUNCT | _ | 4 has | punct |
Pragmatics
No stored speech act for this sentence.
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
|---|---|---|---|---|---|---|---|---|---|
| 1 | have | present | the sea floor | stripes of rock | vn birth-28.2-1 «NP V NP»: agent=Agent stripe=Patient | ||||
| 2 | magnetise | participle | stripes of rock not said here | alternate directions | tree rules | ||||
| 3 | matching | gerund | both sides of ocean ridges | tree rules | |||||
| 4 | flip | present | the magnetic field | now | vn throw-17.1-1 «NP V NP»: agent=Agent | ||||
| 5 | form | present | new crust | the ridge | vn appear-48.1.1 «NP V PP.location»: agent=Theme at ridge=Location |
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:geography:042-plate-tectonics.lesson:14.
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): 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/geography/42-plate-tectonics/14/