--- title: An autopilot is a computer that holds height, speed and direction an… — Why planes fly · tree and pragmatics description: An autopilot is a computer that holds height, speed and direction and follows a planned route, while the pilots watch and take over; some planes can even land themselves in thick fog. Who acts: autopilot, computer, pilots, planes. A sentence of the lesson «Why planes fly» of the technology course of --- [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/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/) / [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/) / 10 # Why planes fly, sentence 10 An autopilot is a computer that holds height, speed and direction and follows a planned route, while the pilots watch and take over; some planes can even land themselves in thick fog. **Who acts:** autopilot, computer, pilots, planes · **What happens:** be, hold, follow, plan, watch, take over · **To what, where:** computer, height, planned route, pilots, thick fog 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 (autopilot, computer, pilots, planes), 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:10 # text = An autopilot is a computer that holds height, speed and direction and follows a planned route, while the pilots watch and take over; some planes can even land themselves in thick fog. # 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 ×1, R8-pos-agree ×1 1 An a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 autopilot autopilot NOUN NN Number=Sing 5 nsubj _ _ 3 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 5 cop _ _ 4 a a DET DT Definite=Ind|PronType=Art 5 det _ _ 5 computer computer NOUN NN Number=Sing 0 root _ _ 6 that that PRON WDT PronType=Rel 7 nsubj _ _ 7 holds hold VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 5 acl:relcl _ _ 8 height height NOUN NN Number=Sing 7 obj _ _ 9 , , PUNCT , _ 10 punct _ _ 10 speed speed NOUN NN Number=Sing 8 conj _ _ 11 and and CCONJ CC _ 12 cc _ _ 12 direction direction NOUN NN Number=Sing 8 conj _ _ 13 and and CCONJ CC _ 14 cc _ _ 14 follows follow VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 conj _ _ 15 a a DET DT Definite=Ind|PronType=Art 17 det _ _ 16 planned plan VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 17 amod _ _ 17 route route NOUN NN Number=Sing 14 obj _ _ 18 , , PUNCT , _ 22 punct _ _ 19 while while SCONJ IN _ 22 mark _ _ 20 the the DET DT Definite=Def|PronType=Art 21 det _ _ 21 pilots pilot NOUN NNS Number=Plur 22 nsubj _ _ 22 watch watch VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 14 advcl _ Agree=R5-strong|Haiku=5:parataxis 23 and and CCONJ CC _ 24 cc _ _ 24 take take VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 22 conj _ Agree=R8-pos-agree|Haiku=22:conj|HaikuPos=VERB:VB:VerbForm=Inf 25 over over ADP RP _ 24 compound:prt _ _ 26 ; ; PUNCT : _ 31 punct _ _ 27 some some DET DT PronType=Ind 28 det _ _ 28 planes plane NOUN NNS Number=Plur 31 nsubj _ _ 29 can can AUX MD VerbForm=Fin 31 aux _ _ 30 even even ADV RB _ 31 advmod _ _ 31 land land VERB VB VerbForm=Inf 24 conj _ _ 32 themselves themselves PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs|Reflex=Yes 31 obj _ _ 33 in in ADP IN _ 35 case _ _ 34 thick thick ADJ JJ Degree=Pos 35 amod _ _ 35 fog fog NOUN NN Number=Sing 31 obl _ _ 36 . . PUNCT . _ 5 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is a** | present | a autopilot | a computer | | | | | tree rules | | 2 | **hold** | present | a computer | height and speed and direction | | | | | vn keep-15.2 «NP V NP»: agent=Agent height=Theme | | 3 | **follow** | present | a computer *not said here* | a planned route | | | | | vn chase-51.6 «NP V NP»: agent=Agent route=Theme | | 4 | **plan** | participle | | | | | | | vn intend-61.2-1-1 «NP V S\_ING»: agent=Agent | | 5 | **watch** | present | the pilots | | | | | | vn search-35.2 «NP V PP.location»: agent=Agent | | 6 | **take over** | present | the pilots *not said here* | | | | | | vn obtain-13.5.2 «NP V NP»: agent=Agent | | 7 | **land** | can | some planes | pilots *= pilot* | | thick fog | | | vn pocket-9.10-1 «NP V NP PP.destination»: agent=Agent themselves=Theme in fog=Destination | 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: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, R8-pos-agree ×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: [Why planes fly, 9](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/9/) - next →: [Why planes fly, 11](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/11/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/22-why-planes-fly/)