--- title: Air traffic controllers in towers and control centres use radar (rad… — Airports, the black box, helicopters and drones · tree and pragmatics description: Air traffic controllers in towers and control centres use radar (radio waves bounced off planes to find where they are) and radio to keep planes apart and tell them when to take off and land; thousands of planes are in the sky at the same time. Who acts: traffic controllers, radio waves, controllers --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/23-airports-black-box-helicopters-drones/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/) / [Airports, the black box, helicopters a…](https://md.mova.elamur.ai/free/en/corpora/school/technology/23-airports-black-box-helicopters-drones/) / 10 # Airports, the black box, helicopters and drones, sentence 10 Air traffic controllers in towers and control centres use radar (radio waves bounced off planes to find where they are) and radio to keep planes apart and tell them when to take off and land; thousands of planes are in the sky at the same time. **Who acts:** traffic controllers, radio waves, controllers · **What happens:** use, bounce off, find, be, keep, tell · **To what, where:** radar, planes, sky · **Speech:** someone speaks here This is a sentence of the lesson «Airports, the black box, helicopters and drones» 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 (traffic controllers, radio waves, controllers), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:023-airports-black-box-helicopters-drones.lesson:10 # text = Air traffic controllers in towers and control centres use radar (radio waves bounced off planes to find where they are) and radio to keep planes apart and tell them when to take off and land; thousands of planes are in the sky at the same time. # source = school lesson (ours) # course = technology # lesson = 023-airports-black-box-helicopters-drones.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, R7-rel-agree ×2, R8-pos-agree ×1 1 Air air NOUN NN Number=Sing 2 compound _ _ 2 traffic traffic NOUN NN Number=Sing 3 compound _ _ 3 controllers controller NOUN NNS Number=Plur 9 nsubj _ _ 4 in in ADP IN _ 5 case _ _ 5 towers tower NOUN NNS Number=Plur 3 nmod _ _ 6 and and CCONJ CC _ 8 cc _ _ 7 control control NOUN NN Number=Sing 8 compound _ _ 8 centres centre NOUN NNS Number=Plur 5 conj _ Agree=R5-strong|Haiku=3:conj 9 use use VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 10 radar radar NOUN NN Number=Sing 9 obj _ _ 11 ( ( PUNCT -LRB- _ 13 punct _ _ 12 radio radio NOUN NN Number=Sing 13 compound _ _ 13 waves wave NOUN NNS Number=Plur 10 appos _ _ 14 bounced bounce VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 13 acl _ _ 15 off off ADP RP _ 14 compound:prt _ _ 16 planes plane NOUN NNS Number=Plur 14 obj _ _ 17 to to PART TO _ 18 mark _ _ 18 find find VERB VB VerbForm=Inf 14 advcl _ _ 19 where where ADV WRB PronType=Rel 18 advmod _ _ 20 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 19 nsubj _ _ 21 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 19 cop _ _ 22 ) ) PUNCT -RRB- _ 19 punct _ _ 23 and and CCONJ CC _ 24 cc _ _ 24 radio radio NOUN NN Number=Sing 10 conj _ Agree=R5-strong|Haiku=18:conj|HaikuPos=VERB:VB:VerbForm=Inf 25 to to PART TO _ 26 mark _ _ 26 keep keep VERB VB VerbForm=Inf 24 xcomp _ _ 27 planes plane NOUN NNS Number=Plur 26 obj _ _ 28 apart apart ADV RB _ 26 advmod _ _ 29 and and CCONJ CC _ 30 cc _ _ 30 tell tell VERB VB VerbForm=Inf 26 conj _ _ 31 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 30 iobj _ _ 32 when when ADV WRB PronType=Int 34 advmod _ _ 33 to to PART TO _ 34 mark _ _ 34 take take VERB VB VerbForm=Inf 30 ccomp _ _ 35 off off ADP RP _ 34 compound:prt _ _ 36 and and CCONJ CC _ 37 cc _ _ 37 land land VERB VB VerbForm=Inf 34 conj _ Agree=R8-pos-agree|Haiku=34:conj|HaikuPos=NOUN:NN:Number=Sing 38 ; ; PUNCT , _ 39 punct _ _ 39 thousands thousand NOUN NNS Number=Plur 9 conj _ _ 40 of of ADP IN _ 41 case _ _ 41 planes plane NOUN NNS Number=Plur 39 nmod _ _ 42 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 45 cop _ _ 43 in in ADP IN _ 45 case _ _ 44 the the DET DT Definite=Def|PronType=Art 45 det _ _ 45 sky sky NOUN NN Number=Sing 9 parataxis _ Agree=R7-rel-agree|Haiku=9:obl 46 at at ADP IN _ 49 case _ _ 47 the the DET DT Definite=Def|PronType=Art 49 det _ _ 48 same same ADJ JJ Degree=Pos 49 amod _ _ 49 time time NOUN NN Number=Sing 45 obl _ Agree=R7-rel-agree|Haiku=45:nmod 50 . . PUNCT . _ 9 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **use** | present | traffic controllers in towers and control centres | radar and radio | | | | | vn eat-39.1 «NP V NP»: agent=Agent radar=Patient | | 2 | **bounce off** | participle | radio waves *not said here* | planes | | | | | vn run-51.3.2-2 «NP V NP»: agent=Agent plane=Agent | | 3 | **find** | to-infinitive | radio waves *not said here* | | | | | | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent | | 4 | **is** | present | controllers *= controller* | | | | | where *property* | tree rules | | 5 | **keep** | to-infinitive | traffic controllers in towers and control centres *not said here* | planes | | | | apart *property* | vn keep-15.2 «NP V NP»: agent=Agent plane=Theme | | 6 | **tell** *speech: assert* | infinitive | traffic controllers in towers and control centres *not said here* | | planes *= plane* | | | | vn transfer\_mesg-37.1.1-1-1 «NP V NP S\_INF»: agent=Agent they=Recipient clause=Topic | | 7 | **take off** *not said to happen* | to-infinitive | | | | | | | vn remove-10.1 «NP V NP»: agent=Agent | | 8 | **land** | infinitive | | | | | | | vn pocket-9.10-1 «NP V»: agent=Theme | | 9 | **is** | present | | | | the sky | time | | tree rules | 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:023-airports-black-box-helicopters-drones.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 ×2, R7-rel-agree ×2, 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: [Airports, the black box, helicopters a…, 9](https://md.mova.elamur.ai/free/en/corpora/school/technology/23-airports-black-box-helicopters-drones/9/) - next →: [Airports, the black box, helicopters a…, 11](https://md.mova.elamur.ai/free/en/corpora/school/technology/23-airports-black-box-helicopters-drones/11/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/23-airports-black-box-helicopters-drones/)