--- title: A hammerhead shark's wide head spreads its electric sensors over a w… — Electric senses: electric eels, sharks, the plat… · tree and pragmatics description: A hammerhead shark's wide head spreads its electric sensors over a wider strip of sea floor, like a metal detector sweeping a beach, as it hunts stingrays hidden under the sand. Who acts: wide head, metal detector, detector. A sentence of the lesson «Electric senses: electric eels, sharks, the platy --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/231-electric-senses-eels-sharks-the-platypus-and-charged-bees/10/) [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/) / [Electric senses: electric eels, sharks…](https://md.mova.elamur.ai/free/en/corpora/school/biology/231-electric-senses-eels-sharks-the-platypus-and-charged-bees/) / 10 # Electric senses: electric eels, sharks, the platypus bill and charged bees, sentence 10 A hammerhead shark's wide head spreads its electric sensors over a wider strip of sea floor, like a metal detector sweeping a beach, as it hunts stingrays hidden under the sand. **Who acts:** wide head, metal detector, detector · **What happens:** spread, sweep, hunt, hide · **To what, where:** electric sensors, wider strip, beach, stingrays, sand This is a sentence of the lesson «Electric senses: electric eels, sharks, the platypus bill and charged bees» 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 (wide head, metal detector, detector), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:231-electric-senses-eels-sharks-the-platypus-and-charged-bees.lesson:10 # text = A hammerhead shark's wide head spreads its electric sensors over a wider strip of sea floor, like a metal detector sweeping a beach, as it hunts stingrays hidden under the sand. # source = school lesson (ours) # course = biology # lesson = 231-electric-senses-eels-sharks-the-platypus-and-charged-bees.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 ×1 1 A a DET DT Definite=Ind|PronType=Art 3 det _ _ 2 hammerhead hammerhead NOUN NN Number=Sing 3 compound _ _ 3 shark shark NOUN NN Number=Sing 6 nmod:poss _ _ 4 's 's PART POS _ 3 case _ _ 5 wide wide ADJ JJ Degree=Pos 6 amod _ _ 6 head head NOUN NN Number=Sing 7 nsubj _ _ 7 spreads spread VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 8 its its PRON PRP$ Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs 10 nmod:poss _ _ 9 electric electric ADJ JJ Degree=Pos 10 amod _ _ 10 sensors sensor NOUN NNS Number=Plur 7 obj _ _ 11 over over ADP IN _ 14 case _ _ 12 a a DET DT Definite=Ind|PronType=Art 14 det _ _ 13 wider wide ADJ JJR Degree=Cmp 14 amod _ _ 14 strip strip NOUN NN Number=Sing 7 obl _ _ 15 of of ADP IN _ 17 case _ _ 16 sea sea NOUN NN Number=Sing 17 compound _ _ 17 floor floor NOUN NN Number=Sing 14 nmod _ _ 18 , , PUNCT , _ 23 punct _ _ 19 like like SCONJ IN _ 23 mark _ _ 20 a a DET DT Definite=Ind|PronType=Art 22 det _ _ 21 metal metal NOUN NN Number=Sing 22 compound _ _ 22 detector detector NOUN NN Number=Sing 23 nsubj _ _ 23 sweeping sweep VERB VBG Tense=Pres|VerbForm=Part 7 conj _ _ 24 a a DET DT Definite=Ind|PronType=Art 25 det _ _ 25 beach beach NOUN NN Number=Sing 23 obj _ _ 26 , , PUNCT , _ 29 punct _ _ 27 as as SCONJ IN _ 29 mark _ _ 28 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 29 nsubj _ _ 29 hunts hunt VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ Agree=R5-strong|Haiku=23:advcl 30 stingrays stingray NOUN NNS Number=Plur 29 obj _ _ 31 hidden hide VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 30 acl _ _ 32 under under ADP IN _ 34 case _ _ 33 the the DET DT Definite=Def|PronType=Art 34 det _ _ 34 sand sand NOUN NN Number=Sing 31 obl _ _ 35 . . PUNCT . _ 7 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **spread** | present | a hammerhead shark's wide head | shark's electric sensors | | a wider strip of sea floor | | | vn spray-9.7-1 «NP V NP PP.destination»: agent=Agent sensor=Theme over strip=Destination | | 2 | **sweep** | gerund | a metal detector | a beach | | | | | vn run-51.3.2-1 «NP V NP»: agent=Theme beach=Trajectory | | 3 | **hunt** | present | detector | stingrays | | | | | vn hunt-35.1 «NP V NP»: agent=Agent stingray=Theme | | 4 | **hide** | participle | | stingrays *not said here* | | the sand | | | vn concealment-16-1 «NP V PP.location»: agent=Agent under sand=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](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:231-electric-senses-eels-sharks-the-platypus-and-charged-bees.lesson:10`. **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 ×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: [Electric senses: electric eels, sharks…, 9](https://md.mova.elamur.ai/free/en/corpora/school/biology/231-electric-senses-eels-sharks-the-platypus-and-charged-bees/9/) - next →: [Electric senses: electric eels, sharks…, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/231-electric-senses-eels-sharks-the-platypus-and-charged-bees/11/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/231-electric-senses-eels-sharks-the-platypus-and-charged-bees/)