--- title: When a plastic bag is stretched, its long chains slide past each oth… — Plastics: useful and stubborn · tree and pragmatics description: When a plastic bag is stretched, its long chains slide past each other and line up, so it thins out before it tears. Who acts: long chains, chain. A sentence of the lesson «Plastics: useful and stubborn» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/8/) [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/) / [Plastics: useful and stubborn](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/) / 8 # Plastics: useful and stubborn, sentence 8 When a plastic bag is stretched, its long chains slide past each other and line up, so it thins out before it tears. **Who acts:** long chains, chain · **What happens:** stretch, slide, line up, thin out, tear · **To what, where:** plastic bag, each This is a sentence of the lesson «Plastics: useful and stubborn» 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 (long chains, chain), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:chemistry:029-plastics-useful-stubborn.lesson:8 # text = When a plastic bag is stretched, its long chains slide past each other and line up, so it thins out before it tears. # source = school lesson (ours) # course = chemistry # lesson = 029-plastics-useful-stubborn.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 When when SCONJ WRB _ 6 mark _ _ 2 a a DET DT Definite=Ind|PronType=Art 4 det _ _ 3 plastic plastic ADJ JJ Degree=Pos 4 amod _ _ 4 bag bag NOUN NN Number=Sing 6 nsubj:pass _ _ 5 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 6 aux:pass _ _ 6 stretched stretch VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 11 advcl _ _ 7 , , PUNCT , _ 11 punct _ _ 8 its its PRON PRP$ Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs 10 nmod:poss _ _ 9 long long ADJ JJ Degree=Pos 10 amod _ _ 10 chains chain NOUN NNS Number=Plur 11 nsubj _ _ 11 slide slide VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 12 past past ADP IN _ 13 case _ _ 13 each each DET DT ExtPos=PRON|PronType=Rcp 11 obl _ _ 14 other other ADJ JJ Degree=Pos 13 fixed _ _ 15 and and CCONJ CC _ 16 cc _ _ 16 line line VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 11 conj _ _ 17 up up ADP RP _ 16 compound:prt _ _ 18 , , PUNCT , _ 21 punct _ _ 19 so so ADV RB _ 21 advmod _ _ 20 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 21 nsubj _ _ 21 thins thin VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 11 conj _ _ 22 out out ADP RP _ 21 compound:prt _ _ 23 before before SCONJ IN _ 25 mark _ Agree=R7-rel-agree|Haiku=25:case|HaikuPos=ADP:IN:_ 24 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 25 nsubj _ _ 25 tears tear VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 21 advcl _ Agree=R7-rel-agree|Haiku=21:obl|HaikuPos=NOUN:NNS:Number=Plur 26 . . PUNCT . _ 11 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 | **stretch** | present · passive | | a plastic bag | | | | | vn bend-45.2 «NP V NP.patient»: subject=Patient | | 2 | **slide** | present | bag's long chains | | | each | | | vn run-51.3.2-2 «NP V PP.location»: agent=Theme past each=Trajectory | | 3 | **line up** | present | bag's long chains *not said here* | | | | | | vn fill-9.8-1 «NP V NP»: agent=Theme | | 4 | **thin out** | present | chain | | | | | | vn other\_cos-45.4 «NP.patient V»: agent=Patient | | 5 | **tear** | present | chain | | | | | | vn run-51.3.2 «NP V»: agent=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:chemistry:029-plastics-useful-stubborn.lesson:8`. **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: [Plastics: useful and stubborn, 7](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/7/) - next →: [Plastics: useful and stubborn, 9](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/9/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/29-plastics-useful-stubborn/)