--- title: A cat purrs by making the muscles of its voice box twitch very fast… — Cats: purring, whiskers, night eyes and grooming · tree and pragmatics description: A cat purrs by making the muscles of its voice box twitch very fast as it breathes in and out, which makes a rumbling vibration. Who acts: cat, muscles. A sentence of the lesson «Cats: purring, whiskers, night eyes and grooming» of the biology course of Mova's primary school with its dependency tree --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/197-cats-purring-whiskers-night-eyes-and-grooming/5/) [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/) / [Cats: purring, whiskers, night eyes an…](https://md.mova.elamur.ai/free/en/corpora/school/biology/197-cats-purring-whiskers-night-eyes-and-grooming/) / 5 # Cats: purring, whiskers, night eyes and grooming, sentence 5 A cat purrs by making the muscles of its voice box twitch very fast as it breathes in and out, which makes a rumbling vibration. **Who acts:** cat, muscles · **What happens:** purr, make, twitch, breathe, rumble · **To what, where:** muscles, rumbling vibration This is a sentence of the lesson «Cats: purring, whiskers, night eyes and grooming» 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 (cat, muscles), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:197-cats-purring-whiskers-night-eyes-and-grooming.lesson:5 # text = A cat purrs by making the muscles of its voice box twitch very fast as it breathes in and out, which makes a rumbling vibration. # source = school lesson (ours) # course = biology # lesson = 197-cats-purring-whiskers-night-eyes-and-grooming.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): no change 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 cat cat NOUN NN Number=Sing 3 nsubj _ _ 3 purrs purr VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 by by SCONJ IN _ 5 mark _ _ 5 making make VERB VBG VerbForm=Ger 3 advcl _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 muscles muscle NOUN NNS Number=Plur 5 obj _ _ 8 of of ADP IN _ 11 case _ _ 9 its its PRON PRP$ Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs 11 nmod:poss _ _ 10 voice voice NOUN NN Number=Sing 11 compound _ _ 11 box box NOUN NN Number=Sing 7 nmod _ _ 12 twitch twitch VERB VB VerbForm=Inf 5 xcomp _ _ 13 very very ADV RB _ 14 advmod _ _ 14 fast fast ADV RB Degree=Pos 12 advmod _ _ 15 as as SCONJ IN _ 17 mark _ _ 16 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 17 nsubj _ _ 17 breathes breathe VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 12 advcl _ _ 18 in in ADV RB _ 17 advmod _ _ 19 and and CCONJ CC _ 20 cc _ _ 20 out out ADV RB _ 18 conj _ _ 21 , , PUNCT , _ 23 punct _ _ 22 which which PRON WDT PronType=Rel 23 nsubj _ _ 23 makes make VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 17 conj _ _ 24 a a DET DT Definite=Ind|PronType=Art 26 det _ _ 25 rumbling rumble VERB VBG VerbForm=Ger 26 amod _ _ 26 vibration vibration NOUN NN Number=Sing 23 obj _ _ 27 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **purr** | present | a cat | | | | | | vn manner\_speaking-37.3 «NP V»: agent=Agent | | 2 | **make** | gerund | a cat *not said here* | the muscles of cat's voice box | | | | | tree rules | | 3 | **twitch** | infinitive | the muscles of cat's voice box *not said here* | | | | | fast *property* | vn body\_internal\_motion-49.1 «NP V»: agent=Agent | | 4 | **breathe** | present | cat | | | | | | vn breathe-40.1.2-1 «NP V»: agent=Agent | | 5 | **make** | present | | a rumbling vibration | | | | | vn build-26.1-1 «NP.asset V NP»: agent=Asset vibration=Product | | 6 | **rumble** | gerund | | | | | | | vn sound\_emission-43.2 «NP V»: agent=Theme | 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:197-cats-purring-whiskers-night-eyes-and-grooming.lesson:5`. **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](https://md.mova.elamur.ai/free/en/releases/0.4/). - ← previous: [Cats: purring, whiskers, night eyes an…, 4](https://md.mova.elamur.ai/free/en/corpora/school/biology/197-cats-purring-whiskers-night-eyes-and-grooming/4/) - next →: [Cats: purring, whiskers, night eyes an…, 6](https://md.mova.elamur.ai/free/en/corpora/school/biology/197-cats-purring-whiskers-night-eyes-and-grooming/6/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/197-cats-purring-whiskers-night-eyes-and-grooming/)