--- title: Nobody knows for sure why we yawn; one idea is that it helps cool th… — Lungs and breathing · tree and pragmatics description: Nobody knows for sure why we yawn; one idea is that it helps cool the brain, and yawns are catching, so seeing someone yawn often makes you yawn. Who acts: Nobody, we, one idea, yawns. A sentence of the lesson «Lungs and breathing» of the biology course of Mova's primary school with its dependency t --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/14/) [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/) / [Lungs and breathing](https://md.mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/) / 14 # Lungs and breathing, sentence 14 Nobody knows for sure why we yawn; one idea is that it helps cool the brain, and yawns are catching, so seeing someone yawn often makes you yawn. **Who acts:** Nobody, we, one idea, yawns, someone, seeing · **What happens:** know, yawn, be, cool, catch, see · **To what, where:** brain, someone, you · **Speech:** someone speaks here This is a sentence of the lesson «Lungs and breathing» 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 (Nobody, we, one idea, yawns), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:066-lungs-and-breathing.lesson:14 # text = Nobody knows for sure why we yawn; one idea is that it helps cool the brain, and yawns are catching, so seeing someone yawn often makes you yawn. # source = school lesson (ours) # course = biology # lesson = 066-lungs-and-breathing.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 ×2 1 Nobody nobody PRON NN Number=Sing|PronType=Neg 2 nsubj _ _ 2 knows know VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 for for ADP IN _ 4 case _ _ 4 sure sure ADJ JJ Degree=Pos 2 obl _ _ 5 why why ADV WRB PronType=Int 7 advmod _ _ 6 we we PRON PRP Case=Nom|Number=Plur|Person=1|PronType=Prs 7 nsubj _ _ 7 yawn yawn VERB VBP Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin 2 ccomp _ _ 8 ; ; PUNCT , _ 14 punct _ _ 9 one one NUM CD NumForm=Word|NumType=Card 10 nummod _ _ 10 idea idea NOUN NN Number=Sing 14 nsubj _ _ 11 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 14 cop _ _ 12 that that SCONJ IN _ 14 mark _ _ 13 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 14 nsubj _ _ 14 helps help VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 2 parataxis _ _ 15 cool cool VERB VB VerbForm=Inf 14 xcomp _ _ 16 the the DET DT Definite=Def|PronType=Art 17 det _ _ 17 brain brain NOUN NN Number=Sing 15 obj _ _ 18 , , PUNCT , _ 22 punct _ _ 19 and and CCONJ CC _ 22 cc _ _ 20 yawns yawn NOUN NNS Number=Plur 22 nsubj _ _ 21 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 22 aux _ _ 22 catching catch VERB VBG Tense=Pres|VerbForm=Part 14 conj _ Agree=R5-strong|Haiku=2:parataxis 23 , , PUNCT , _ 25 punct _ _ 24 so so ADV RB _ 25 advmod _ _ 25 seeing see VERB VBG Tense=Pres|VerbForm=Part 29 csubj _ Agree=R5-strong|Haiku=22:advcl 26 someone someone PRON NN Number=Sing|PronType=Ind 25 obj _ _ 27 yawn yawn VERB VB VerbForm=Inf 25 xcomp _ _ 28 often often ADV RB _ 27 advmod _ _ 29 makes make VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 2 conj _ _ 30 you you PRON PRP Case=Acc|Person=2|PronType=Prs 29 obj _ _ 31 yawn yawn VERB VB VerbForm=Inf 29 xcomp _ _ 32 . . PUNCT . _ 2 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **know** | present | Nobody | | | | | for sure | vn comprehend-87.2-1-1-1 «NP V how S\_INF»: agent=Experiencer clause=Stimulus | | 2 | **yawn** | present | we | | | | | | vn nonverbal\_expression-40.2 «NP V»: agent=Agent | | 3 | **is** | present | one idea | | | | | help *property* | tree rules | | 4 | **cool** | infinitive | one idea *not said here* | the brain | | | | | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent brain=Patient | | 5 | **catch** | present · progressive | yawns | | | | | | vn get-13.5.1 «NP V NP»: agent=Agent | | 6 | **see** | gerund | | someone | | | | | tree rules | | 7 | **yawn** | infinitive | someone *not said here* | | | | | often *property* | vn nonverbal\_expression-40.2 «NP V»: agent=Agent | | 8 | **make** | present | seeing | you | | | | | tree rules | | 9 | **yawn** | infinitive | you *not said here* | | | | | | vn nonverbal\_expression-40.2 «NP V»: agent=Agent | 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:066-lungs-and-breathing.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): 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](https://md.mova.elamur.ai/free/en/releases/0.4/). - ← previous: [Lungs and breathing, 13](https://md.mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/13/) - next →: [Lungs and breathing, 15](https://md.mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/15/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/)