Compasses and the magnetic Earth, sentence 8
A magnetised needle on a leaf floating in water turns to point north; sailors used compasses like this nearly a thousand years ago.
Who acts: leaf, magnetised needle, sailors · What happens: magnetise, float, turn, point, use · To what, where: water, compasses
This is a sentence of the lesson «Compasses and the magnetic Earth» of the physics 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 (leaf, magnetised needle, sailors), 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 | A | a | DET | Definite=Ind PronType=Art | 3 needle | det |
| 2 | magnetised | magnetise | VERB | Tense=Past VerbForm=Part Voice=Pass | 3 needle | amod |
| 3 | needle | needle | NOUN | Number=Sing | 10 turns | nsubj |
| 4 | on | on | ADP | _ | 6 leaf | case |
| 5 | a | a | DET | Definite=Ind PronType=Art | 6 leaf | det |
| 6 | leaf | leaf | NOUN | Number=Sing | 3 needle | nmod |
| 7 | floating | float | VERB | VerbForm=Ger | 6 leaf | acl |
| 8 | in | in | ADP | _ | 9 water | case |
| 9 | water | water | NOUN | Number=Sing | 7 floating | obl |
| 10 | turns | turn | VERB | Mood=Ind Number=Sing Person=3 Tense=Pres VerbForm=Fin | root | root |
| 11 | to | to | PART | _ | 12 point | mark |
| 12 | point | point | VERB | VerbForm=Inf | 7 floating | xcomp |
| 13 | north | north | ADV | _ | 12 point | advmod |
| 14 | ; | ; | PUNCT | _ | 10 turns | punct |
| 15 | sailors | sailor | NOUN | Number=Plur | 16 used | nsubj |
| 16 | used | use | VERB | Mood=Ind Number=Plur Person=3 Tense=Past VerbForm=Fin | 10 turns | parataxis |
| 17 | compasses | compass | NOUN | Number=Plur | 16 used | obj |
| 18 | like | like | ADP | _ | 19 this | case |
| 19 | this | this | PRON | Number=Sing PronType=Dem | 17 compasses | nmod |
| 20 | nearly | nearly | ADV | _ | 22 thousand | advmod |
| 21 | a | a | DET | Definite=Ind PronType=Art | 22 thousand | det |
| 22 | thousand | thousand | NUM | NumForm=Word NumType=Card | 23 years | nummod |
| 23 | years | year | NOUN | Number=Plur | 24 ago | obl:unmarked |
| 24 | ago | ago | ADV | _ | 16 used | advmod |
| 25 | . | . | PUNCT | _ | 10 turns | 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 | magnetise | participle | tree rules | ||||||
| 2 | float | gerund | a leaf not said here | water | tree rules | ||||
| 3 | turn | present | a magnetised needle on a leaf | vn roll-51.3.1 «NP.theme V»: agent=Theme | |||||
| 4 | point | to-infinitive | a leaf not said here | north property | vn wink-40.3.1 «NP V»: agent=Agent | ||||
| 5 | use | past | sailors | compasses | like this; ago property | vn eat-39.1 «NP V NP»: agent=Agent compass=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:physics:030-compasses-and-the-magnetic-earth.lesson:8.
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. 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/physics/30-compasses-and-the-magnetic-earth/8/