--- title: If the cabin loses pressure, oxygen masks drop down, because in the… — Why planes fly · tree and pragmatics description: If the cabin loses pressure, oxygen masks drop down, because in the thin air up there a person without a mask soon passes out; adults put their own mask on first, so they stay awake to help others, and the masks last long enough for the plane to descend to thicker air. Who acts: cabin, oxygen masks, --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/16/) [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/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Why planes fly](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/) / 16 # Why planes fly, sentence 16 If the cabin loses pressure, oxygen masks drop down, because in the thin air up there a person without a mask soon passes out; adults put their own mask on first, so they stay awake to help others, and the masks last long enough for the plane to descend to thicker air. **Who acts:** cabin, oxygen masks, person, adults, masks · **What happens:** lose, drop down, pass out, put, stay, help · **To what, where:** pressure, thin air, own mask, others, plane, thicker air This is a sentence of the lesson «Why planes fly» of the technology 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 (cabin, oxygen masks, person, adults), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:022-why-planes-fly.lesson:16 # text = If the cabin loses pressure, oxygen masks drop down, because in the thin air up there a person without a mask soon passes out; adults put their own mask on first, so they stay awake to help others, and the masks last long enough for the plane to descend to thicker air. # source = school lesson (ours) # course = technology # lesson = 022-why-planes-fly.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 ×4, R6-punct-agree ×2 1 If if SCONJ IN _ 4 mark _ _ 2 the the DET DT Definite=Def|PronType=Art 3 det _ _ 3 cabin cabin NOUN NN Number=Sing 4 nsubj _ _ 4 loses lose VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 9 advcl _ _ 5 pressure pressure NOUN NN Number=Sing 4 obj _ _ 6 , , PUNCT , _ 9 punct _ _ 7 oxygen oxygen NOUN NN Number=Sing 8 compound _ _ 8 masks mask NOUN NNS Number=Plur 9 nsubj _ _ 9 drop drop VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 10 down down ADP RP _ 9 compound:prt _ _ 11 , , PUNCT , _ 25 punct _ _ 12 because because SCONJ IN _ 25 mark _ _ 13 in in ADP IN _ 16 case _ _ 14 the the DET DT Definite=Def|PronType=Art 16 det _ _ 15 thin thin ADJ JJ Degree=Pos 16 amod _ _ 16 air air NOUN NN Number=Sing 25 obl _ Agree=R5-strong|Haiku=18:obl 17 up up ADV RB _ 18 advmod _ _ 18 there there ADV RB PronType=Dem 16 advmod _ Agree=R5-strong|Haiku=25:advmod 19 a a DET DT Definite=Ind|PronType=Art 20 det _ _ 20 person person NOUN NN Number=Sing 25 nsubj _ _ 21 without without ADP IN _ 23 case _ _ 22 a a DET DT Definite=Ind|PronType=Art 23 det _ _ 23 mask mask NOUN NN Number=Sing 20 nmod _ _ 24 soon soon ADV RB Degree=Pos 25 advmod _ _ 25 passes pass VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 9 advcl _ _ 26 out out ADP RP _ 25 compound:prt _ _ 27 ; ; PUNCT : _ 29 punct _ _ 28 adults adult NOUN NNS Number=Plur 29 nsubj _ _ 29 put put VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 9 conj _ _ 30 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 32 nmod:poss _ _ 31 own own ADJ JJ Degree=Pos 32 amod _ _ 32 mask mask NOUN NN Number=Sing 29 obj _ _ 33 on on ADP IN _ 34 case _ _ 34 first first ADV RB NumForm=Word|NumType=Ord 29 obl _ _ 35 , , PUNCT , _ 38 punct _ _ 36 so so ADV RB _ 38 advmod _ _ 37 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 38 nsubj _ _ 38 stay stay VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 9 conj _ _ 39 awake awake ADJ JJ Degree=Pos 38 xcomp _ _ 40 to to PART TO _ 41 mark _ _ 41 help help VERB VB VerbForm=Inf 38 advcl _ Agree=R5-strong|Haiku=39:advcl 42 others other NOUN NNS Number=Plur 41 obj _ _ 43 , , PUNCT , _ 47 punct _ Agree=R6-punct-agree|Haiku=52:punct 44 and and CCONJ CC _ 47 cc _ _ 45 the the DET DT Definite=Def|PronType=Art 46 det _ _ 46 masks mask NOUN NNS Number=Plur 47 nsubj _ _ 47 last last VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 38 conj _ _ 48 long long ADV RB Degree=Pos 47 advmod _ _ 49 enough enough ADV RB _ 48 advmod _ _ 50 for for SCONJ IN _ 54 mark _ Agree=R5-strong|Haiku=52:case|HaikuPos=ADP:IN:_ 51 the the DET DT Definite=Def|PronType=Art 52 det _ _ 52 plane plane NOUN NN Number=Sing 47 obl _ _ 53 to to PART TO _ 54 mark _ _ 54 descend descend VERB VB VerbForm=Inf 52 acl _ _ 55 to to ADP IN _ 57 case _ _ 56 thicker thick ADJ JJR Degree=Cmp 57 amod _ _ 57 air air NOUN NN Number=Sing 54 obl _ _ 58 . . PUNCT . _ 9 punct _ Agree=R6-punct-agree|Haiku=4:punct ``` ## Pragmatics {#pragmatics} - form: statement - act: narrate - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **lose** *a condition, not said to happen* | present | the cabin | pressure | | | | | vn succeed-74-3-1 «NP V NP»: agent=Agent pressure=Eventuality | | 2 | **drop down** | present | oxygen masks | | | | | | vn roll-51.3.1 «NP.theme V»: agent=Theme | | 3 | **pass out** | present | a person without a mask | | | the thin air | | soon *property* | vn change\_bodily\_state-40.8.4 «NP V»: agent=Experiencer | | 4 | **put** | past | adults | masks's own mask | | | | | vn put-9.1-2 «NP V PP.destination NP»: agent=Agent mask=Theme on first=Destination | | 5 | **stay** | present | adults *= adult* | | | | | awake *property* | vn exist-47.1 «NP V»: agent=Theme | | 6 | **help** | to-infinitive | adults *= adult* *not said here* | others | | | | | vn help-72.1-1-1 «NP V NP»: agent=Agent other=Beneficiary | | 7 | **last** | present | the masks | the plane | | | | long *property* | vn cost-54.2 «NP V NP.value»: agent=Theme | | 8 | **descend** | to-infinitive | the masks *not said here* | the plane *not said here* | | thicker air | | | vn meander-47.7-1 «NP V PP.location»: agent=Theme to air=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:technology:022-why-planes-fly.lesson:16`. **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 ×4, R6-punct-agree ×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: [Why planes fly, 15](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/15/) - next →: [Why planes fly, 17](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/17/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/)