--- title: A transformer has two coils of wire round an iron core and changes t… — Power stations and the grid · tree and pragmatics description: A transformer has two coils of wire round an iron core and changes the voltage, up for long lines and down for homes; substations hum because the iron vibrates. Who acts: transformer, substations, iron. A sentence of the lesson «Power stations and the grid» of the technology course of Mova's primary --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/32-power-stations-and-the-grid/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/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Power stations and the grid](https://md.mova.elamur.ai/free/en/corpora/school/technology/32-power-stations-and-the-grid/) / 14 # Power stations and the grid, sentence 14 A transformer has two coils of wire round an iron core and changes the voltage, up for long lines and down for homes; substations hum because the iron vibrates. **Who acts:** transformer, substations, iron · **What happens:** have, change, hum, vibrate · **To what, where:** two coils, voltage This is a sentence of the lesson «Power stations and the grid» 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 (transformer, substations, iron), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:032-power-stations-and-the-grid.lesson:14 # text = A transformer has two coils of wire round an iron core and changes the voltage, up for long lines and down for homes; substations hum because the iron vibrates. # source = school lesson (ours) # course = technology # lesson = 032-power-stations-and-the-grid.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): R7-rel-agree ×2 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 transformer transformer NOUN NN Number=Sing 3 nsubj _ _ 3 has have VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 two two NUM CD NumForm=Word|NumType=Card 5 nummod _ _ 5 coils coil NOUN NNS Number=Plur 3 obj _ _ 6 of of ADP IN _ 7 case _ _ 7 wire wire NOUN NN Number=Sing 5 nmod _ _ 8 round round ADP IN _ 11 case _ _ 9 an a DET DT Definite=Ind|PronType=Art 11 det _ _ 10 iron iron NOUN NN Number=Sing 11 compound _ Agree=R7-rel-agree|Haiku=11:amod|HaikuPos=ADJ:JJ:Degree=Pos 11 core core NOUN NN Number=Sing 5 nmod _ _ 12 and and CCONJ CC _ 13 cc _ _ 13 changes change VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 3 conj _ _ 14 the the DET DT Definite=Def|PronType=Art 15 det _ _ 15 voltage voltage NOUN NN Number=Sing 13 obj _ _ 16 , , PUNCT , _ 20 punct _ _ 17 up up ADV RB _ 20 advmod _ _ 18 for for ADP IN _ 20 case _ _ 19 long long ADJ JJ Degree=Pos 20 amod _ _ 20 lines line NOUN NNS Number=Plur 13 obl _ _ 21 and and CCONJ CC _ 24 cc _ _ 22 down down ADV RB _ 24 advmod _ _ 23 for for ADP IN _ 24 case _ _ 24 homes home NOUN NNS Number=Plur 20 conj _ _ 25 ; ; PUNCT , _ 27 punct _ _ 26 substations substation NOUN NNS Number=Plur 27 nsubj _ _ 27 hum hum VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 3 parataxis _ Agree=R7-rel-agree|Haiku=3:conj 28 because because SCONJ IN _ 31 mark _ _ 29 the the DET DT Definite=Def|PronType=Art 30 det _ _ 30 iron iron NOUN NN Number=Sing 31 nsubj _ _ 31 vibrates vibrate VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 27 advcl _ _ 32 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **have** | present | a transformer | two coils of wire | | | | round a iron core | vn birth-28.2-1 «NP V NP»: agent=Agent coil=Patient | | 2 | **change** | present | a transformer *not said here* | the voltage | | | | for long lines and homes | vn exchange-13.6.1 «NP V NP PP.co-theme»: agent=Agent voltage=Theme for line=Co-Theme | | 3 | **hum** | present | substations | | | | | | vn bulge-47.5.3 «NP V»: agent=Location | | 4 | **vibrate** | present | the iron | | | | | | vn other\_cos-45.4 «NP.patient V»: agent=Patient | 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:032-power-stations-and-the-grid.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): R7-rel-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: [Power stations and the grid, 13](https://md.mova.elamur.ai/free/en/corpora/school/technology/32-power-stations-and-the-grid/13/) - next →: [Power stations and the grid, 15](https://md.mova.elamur.ai/free/en/corpora/school/technology/32-power-stations-and-the-grid/15/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/32-power-stations-and-the-grid/)