--- title: Some changes can be undone: melt chocolate and let it set, and it is… — Changes you can undo and changes you can't · tree and pragmatics description: Some changes can be undone: melt chocolate and let it set, and it is chocolate again; fold a paper aeroplane and unfold it, and it is still paper. Who acts: it, aeroplane. A sentence of the lesson «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school with its --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/0/) [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/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/) / [Changes you can undo and changes you c…](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/) / 0 # Changes you can undo and changes you can't, sentence 0 Some changes can be undone: melt chocolate and let it set, and it is chocolate again; fold a paper aeroplane and unfold it, and it is still paper. **Who acts:** it, aeroplane · **What happens:** undo, melt, let, set, be, fold · **To what, where:** changes, chocolate, it, paper aeroplane, aeroplane, paper This is a sentence of the lesson «Changes you can undo and changes you can't» of the chemistry 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 (it, aeroplane), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:chemistry:009-changes-you-can-and-cannot-undo.lesson:0 # text = Some changes can be undone: melt chocolate and let it set, and it is chocolate again; fold a paper aeroplane and unfold it, and it is still paper. # source = school lesson (ours) # course = chemistry # lesson = 009-changes-you-can-and-cannot-undo.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 Some some DET DT PronType=Ind 2 det _ _ 2 changes change NOUN NNS Number=Plur 5 nsubj:pass _ _ 3 can can AUX MD VerbForm=Fin 5 aux _ _ 4 be be AUX VB VerbForm=Inf 5 aux:pass _ _ 5 undone undo VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 0 root _ _ 6 : : PUNCT : _ 8 punct _ _ 7 melt melt VERB VB Mood=Imp|VerbForm=Fin 5 parataxis _ _ 8 chocolate chocolate NOUN NN Number=Sing 7 obj _ _ 9 and and CCONJ CC _ 10 cc _ _ 10 let let VERB VB VerbForm=Inf 7 conj _ _ 11 it it PRON PRP Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs 10 obj _ _ 12 set set VERB VB VerbForm=Inf 10 xcomp _ _ 13 , , PUNCT , _ 17 punct _ _ 14 and and CCONJ CC _ 17 cc _ _ 15 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 17 nsubj _ _ 16 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 17 cop _ _ 17 chocolate chocolate NOUN NN Number=Sing 8 conj _ _ 18 again again ADV RB _ 17 advmod _ _ 19 ; ; PUNCT : _ 20 punct _ _ 20 fold fold VERB VB Mood=Imp|VerbForm=Fin 8 parataxis _ _ 21 a a DET DT Definite=Ind|PronType=Art 23 det _ _ 22 paper paper NOUN NN Number=Sing 23 compound _ _ 23 aeroplane aeroplane NOUN NN Number=Sing 20 obj _ _ 24 and and CCONJ CC _ 25 cc _ _ 25 unfold unfold VERB VB Mood=Imp|VerbForm=Fin 20 conj _ _ 26 it it PRON PRP Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs 25 obj _ _ 27 , , PUNCT , _ 32 punct _ _ 28 and and CCONJ CC _ 32 cc _ _ 29 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 32 nsubj _ _ 30 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 32 cop _ _ 31 still still ADV RB _ 32 advmod _ _ 32 paper paper NOUN NN Number=Sing 5 obl _ _ 33 . . PUNCT . _ 5 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: assert - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **undo** | can · passive | | some changes | | | | | vn destroy-44 «NP V NP»: subject=Patient | | 2 | **melt** | infinitive | | chocolate and chocolate | | | | | vn other\_cos-45.4-1 «NP V NP ADJ»: agent=Patient chocolate=Result | | 3 | **let** | infinitive | | it | | | | | tree rules | | 4 | **set** | infinitive | | | | | | | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient | | 5 | **is a** | present | it | chocolate | | | again | | tree rules | | 6 | **fold** | infinitive | | a paper aeroplane | | | | | vn bend-45.2 «NP V NP.patient»: agent=Agent aeroplane=Patient | | 7 | **unfold** | infinitive | | aeroplane | | | | | vn bend-45.2 «NP V NP.patient»: agent=Agent it=Patient | | 8 | **is a** | present | aeroplane | paper | | | still | | 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:chemistry:009-changes-you-can-and-cannot-undo.lesson:0`. **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: [Separating mixtures, 15](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/8-separating-mixtures/15/) - next →: [Changes you can undo and changes you c…, 1](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/1/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/)