--- title: Vipers have two long hollow fangs at the front that fold back agains… — Snakes to keep away from: cobras, mambas, vipers… · tree and pragmatics description: Vipers have two long hollow fangs at the front that fold back against the roof of the mouth when it closes, and spare fangs wait behind them in case one breaks. Who acts: Vipers, two long hollow fangs, front, spare fangs. A sentence of the lesson «Snakes to keep away from: cobras, mambas, vipers and --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/12/) [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/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [Snakes to keep away from: cobras, mamb…](https://md.mova.elamur.ai/free/en/corpora/school/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/) / 12 # Snakes to keep away from: cobras, mambas, vipers and rattlesnakes, sentence 12 Vipers have two long hollow fangs at the front that fold back against the roof of the mouth when it closes, and spare fangs wait behind them in case one breaks. **Who acts:** Vipers, two long hollow fangs, front, spare fangs, one · **What happens:** have, fold back, close, wait, break · **To what, where:** two long hollow fangs, front, case This is a sentence of the lesson «Snakes to keep away from: cobras, mambas, vipers and rattlesnakes» of the biology 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 (Vipers, two long hollow fangs, front, spare fangs), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes.lesson:12 # text = Vipers have two long hollow fangs at the front that fold back against the roof of the mouth when it closes, and spare fangs wait behind them in case one breaks. # source = school lesson (ours) # course = biology # lesson = 322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes.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): R1-cc-next ×1, R5-strong ×2 1 Vipers viper NOUN NNS Number=Plur 2 nsubj _ _ 2 have have VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 two two NUM CD NumForm=Word|NumType=Card 6 nummod _ _ 4 long long ADJ JJ Degree=Pos 6 amod _ _ 5 hollow hollow ADJ JJ Degree=Pos 6 amod _ _ 6 fangs fang NOUN NNS Number=Plur 2 obj _ _ 7 at at ADP IN _ 9 case _ _ 8 the the DET DT Definite=Def|PronType=Art 9 det _ _ 9 front front NOUN NN Number=Sing 6 nmod _ _ 10 that that PRON WDT PronType=Rel 11 nsubj _ _ 11 fold fold VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 6 acl:relcl _ Agree=R5-strong|Haiku=9:acl:relcl|HaikuPos=VERB:VB:VerbForm=Inf 12 back back ADV RB _ 11 advmod _ _ 13 against against ADP IN _ 15 case _ _ 14 the the DET DT Definite=Def|PronType=Art 15 det _ _ 15 roof roof NOUN NN Number=Sing 11 obl _ Agree=R5-strong|Haiku=12:obl 16 of of ADP IN _ 18 case _ _ 17 the the DET DT Definite=Def|PronType=Art 18 det _ _ 18 mouth mouth NOUN NN Number=Sing 15 nmod _ _ 19 when when ADV WRB PronType=Int 21 advmod _ _ 20 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 21 nsubj _ _ 21 closes close VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 11 advcl _ _ 22 , , PUNCT , _ 2 punct _ _ 23 and and CCONJ CC _ 26 cc _ Agree=R1-cc-next|Haiku=2:cc 24 spare spare ADJ JJ Degree=Pos 25 amod _ _ 25 fangs fang NOUN NNS Number=Plur 26 nsubj _ _ 26 wait wait VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 2 conj _ _ 27 behind behind ADP IN _ 28 case _ _ 28 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 26 obl _ _ 29 in in ADP IN _ 30 case _ _ 30 case case NOUN NN Number=Sing 26 obl _ _ 31 one one NUM CD NumForm=Word|NumType=Card 32 nsubj _ _ 32 breaks break VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 30 acl _ _ 33 . . PUNCT . _ 2 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 | Vipers | two long hollow fangs | | the front | | | vn birth-28.2-1 «NP V NP»: agent=Agent fang=Patient | | 2 | **fold back** | present | two long hollow fangs | | | | | against the roof of the mouth | vn bend-45.2 «NP.patient V»: agent=Patient | | 3 | **close** | present | front | | | | | | vn other\_cos-45.4 «NP.patient V»: agent=Patient | | 4 | **wait** | present | spare fangs | | | case | | behind vipers *= viper* | vn exist-47.1 «NP V PP.location»: agent=Theme behind they=Location | | 5 | **break** | present | one | case *not said here* | | | | | vn hurt-40.8.3-1-1 «NP V NP»: agent=Experiencer case=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:biology:322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes.lesson:12`. **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): R1-cc-next ×1, R5-strong ×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: [Snakes to keep away from: cobras, mamb…, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/11/) - next →: [Snakes to keep away from: cobras, mamb…, 13](https://md.mova.elamur.ai/free/en/corpora/school/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/13/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/322-snakes-to-keep-away-from-cobras-mambas-vipers-and-rattlesnakes/)