--- title: In a food web everything is connected, so a change to one living thi… — Balance in a food web · tree and pragmatics description: In a food web everything is connected, so a change to one living thing spreads: when wolves disappeared from Yellowstone Park, deer grew so many that they ate the young trees by the rivers; when wolves came back, the trees grew again. Who acts: change, wolves, deer, trees. A sentence of the lesson « --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/2/) [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/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / [Balance in a food web](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/) / 2 # Balance in a food web, sentence 2 In a food web everything is connected, so a change to one living thing spreads: when wolves disappeared from Yellowstone Park, deer grew so many that they ate the young trees by the rivers; when wolves came back, the trees grew again. **Who acts:** change, wolves, deer, trees · **What happens:** connect, spread, disappear, grow, eat, come back · **To what, where:** everything, food web, Yellowstone Park, many, young trees This is a sentence of the lesson «Balance in a food web» of the world 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 (change, wolves, deer, trees), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:world:030-balance-in-food-webs.lesson:2 # text = In a food web everything is connected, so a change to one living thing spreads: when wolves disappeared from Yellowstone Park, deer grew so many that they ate the young trees by the rivers; when wolves came back, the trees grew again. # source = school lesson (ours) # course = world # lesson = 030-balance-in-food-webs.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): R6-punct-agree ×1, R7-rel-agree ×1 1 In in ADP IN _ 4 case _ _ 2 a a DET DT Definite=Ind|PronType=Art 4 det _ _ 3 food food NOUN NN Number=Sing 4 compound _ _ 4 web web NOUN NN Number=Sing 7 obl _ _ 5 everything everything PRON NN Number=Sing|PronType=Tot 7 nsubj:pass _ _ 6 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 aux:pass _ _ 7 connected connect VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 46 advcl _ _ 8 , , PUNCT , _ 11 punct _ _ 9 so so ADV RB _ 16 advmod _ _ 10 a a DET DT Definite=Ind|PronType=Art 11 det _ _ 11 change change NOUN NN Number=Sing 16 nsubj _ _ 12 to to ADP IN _ 15 case _ _ 13 one one NUM CD NumForm=Word|NumType=Card 15 nummod _ _ 14 living live ADJ JJ Degree=Pos 15 amod _ _ 15 thing thing NOUN NN Number=Sing 11 nmod _ _ 16 spreads spread VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 parataxis _ Agree=R7-rel-agree|Haiku=7:conj 17 : : PUNCT : _ 20 punct _ _ 18 when when ADV WRB PronType=Int 20 advmod _ _ 19 wolves wolf NOUN NNS Number=Plur 20 nsubj _ _ 20 disappeared disappear VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 7 parataxis _ _ 21 from from ADP IN _ 23 case _ _ 22 Yellowstone Yellowstone PROPN NNP Number=Sing 23 compound _ _ 23 Park Park PROPN NNP Number=Sing 20 obl _ _ 24 , , PUNCT , _ 26 punct _ _ 25 deer deer NOUN NN Number=Sing 26 nsubj _ _ 26 grew grow VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 20 conj _ _ 27 so so ADV RB _ 28 advmod _ _ 28 many many ADJ JJ Degree=Pos 26 obj _ _ 29 that that SCONJ IN _ 31 mark _ _ 30 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 31 nsubj _ _ 31 ate eat VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 26 advcl _ _ 32 the the DET DT Definite=Def|PronType=Art 34 det _ _ 33 young young ADJ JJ Degree=Pos 34 amod _ _ 34 trees tree NOUN NNS Number=Plur 31 obj _ _ 35 by by ADP IN _ 37 case _ _ 36 the the DET DT Definite=Def|PronType=Art 37 det _ _ 37 rivers river NOUN NNS Number=Plur 31 obl _ _ 38 ; ; PUNCT , _ 41 punct _ _ 39 when when ADV WRB PronType=Int 41 advmod _ _ 40 wolves wolf NOUN NNS Number=Plur 41 nsubj _ _ 41 came come VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 26 conj _ _ 42 back back ADV RB _ 41 advmod _ _ 43 , , PUNCT , _ 7 punct _ _ 44 the the DET DT Definite=Def|PronType=Art 45 det _ _ 45 trees tree NOUN NNS Number=Plur 46 nsubj _ _ 46 grew grow VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 47 again again ADV RB _ 46 advmod _ _ 48 . . PUNCT . _ 7 punct _ Agree=R6-punct-agree|Haiku=46: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 | **connect** | present · passive | | everything | | a food web | | | vn mix-22.1-2-1 «NP V NP»: subject=Patient | | 2 | **spread** | present | a change to one living thing | | | | | | vn appear-48.1.1 «NP V»: agent=Theme | | 3 | **disappear** | past | wolves | | | Yellowstone Park | | | vn disappearance-48.2-1 «NP V PP»: agent=Theme from park=Initial\_Location | | 4 | **grow** | past | deer | many | | | | | vn appear-48.1.1 «PP.location V NP»: agent=Location many=Theme | | 5 | **eat** | past | wolves *= wolf* | the young trees | | | | by the rivers | vn eat-39.1-1 «NP V NP»: agent=Agent tree=Patient | | 6 | **come back** | past | wolves | | | | | | vn escape-51.1-1 «NP V»: agent=Theme | | 7 | **grow** | past | the trees | | | | again | | vn appear-48.1.1 «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:world:030-balance-in-food-webs.lesson:2`. **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): R6-punct-agree ×1, R7-rel-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: [Balance in a food web, 1](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/1/) - next →: [Balance in a food web, 3](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/3/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/30-balance-in-food-webs/)