--- title: A vacuum cleaner's fan pushes air out, which lowers the pressure ins… — Pressure tricks: pumps, tyres and vacuums · tree and pragmatics description: A vacuum cleaner's fan pushes air out, which lowers the pressure inside, so the outside air pushes in at the nozzle carrying dust. Who acts: fan, air, outside air, nozzle. A sentence of the lesson «Pressure tricks: pumps, tyres and vacuums» of the physics course of Mova's primary school with its dep --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/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/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/) / [Pressure tricks: pumps, tyres and vacu…](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/) / 5 # Pressure tricks: pumps, tyres and vacuums, sentence 5 A vacuum cleaner's fan pushes air out, which lowers the pressure inside, so the outside air pushes in at the nozzle carrying dust. **Who acts:** fan, air, outside air, nozzle · **What happens:** push out, lower, push in, carry · **To what, where:** air, pressure, dust This is a sentence of the lesson «Pressure tricks: pumps, tyres and vacuums» of the physics 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 (fan, air, outside air, nozzle), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:physics:016-pressure-tricks-pumps-tyres-vacuums.lesson:5 # text = A vacuum cleaner's fan pushes air out, which lowers the pressure inside, so the outside air pushes in at the nozzle carrying dust. # source = school lesson (ours) # course = physics # lesson = 016-pressure-tricks-pumps-tyres-vacuums.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 3 det _ _ 2 vacuum vacuum NOUN NN Number=Sing 3 compound _ _ 3 cleaner cleaner NOUN NN Number=Sing 5 nmod:poss _ _ 4 's 's PART POS _ 3 case _ _ 5 fan fan NOUN NN Number=Sing 6 nsubj _ _ 6 pushes push VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 7 air air NOUN NN Number=Sing 6 obj _ _ 8 out out ADP RP _ 6 compound:prt _ _ 9 , , PUNCT , _ 11 punct _ _ 10 which which PRON WDT PronType=Rel 11 nsubj _ _ 11 lowers lower VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 acl:relcl _ _ 12 the the DET DT Definite=Def|PronType=Art 13 det _ _ 13 pressure pressure NOUN NN Number=Sing 11 obj _ _ 14 inside inside ADV RB _ 13 advmod _ _ 15 , , PUNCT , _ 20 punct _ _ 16 so so ADV RB _ 20 advmod _ _ 17 the the DET DT Definite=Def|PronType=Art 19 det _ _ 18 outside outside ADJ JJ Degree=Pos 19 amod _ _ 19 air air NOUN NN Number=Sing 20 nsubj _ _ 20 pushes push VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 11 conj _ _ 21 in in ADP RP _ 20 compound:prt _ _ 22 at at ADP IN _ 24 case _ _ 23 the the DET DT Definite=Def|PronType=Art 24 det _ _ 24 nozzle nozzle NOUN NN Number=Sing 20 obl _ _ 25 carrying carry VERB VBG VerbForm=Ger 24 acl _ _ 26 dust dust NOUN NN Number=Sing 25 obj _ _ 27 . . PUNCT . _ 6 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **push out** | present | a vacuum cleaner's fan | air | | | | | vn carry-11.4-1-1 «NP V NP»: agent=Agent air=Theme | | 2 | **lower** | present | air | the pressure | | | | | vn put\_direction-9.4 «NP V NP»: agent=Agent pressure=Theme | | 3 | **push in** | present | the outside air | | | | | at the nozzle | vn push-12-1-1 «NP V PP-Conative»: agent=Agent at nozzle=Theme | | 4 | **carry** | gerund | the nozzle *not said here* | dust | | | | | vn carry-11.4 «NP V NP»: agent=Agent dust=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:physics:016-pressure-tricks-pumps-tyres-vacuums.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: [Pressure tricks: pumps, tyres and vacu…, 4](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/4/) - next →: [Pressure tricks: pumps, tyres and vacu…, 6](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/6/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/16-pressure-tricks-pumps-tyres-vacuums/)