--- title: Before vents were found in 1977, scientists thought all life on Eart… — Vents and trenches: tubeworms, iron snails, the… · tree and pragmatics description: Before vents were found in 1977, scientists thought all life on Earth depended on sunlight; some scientists now think life on Earth may have started at vents, but nobody knows for sure. Who acts: scientists, life, nobody. A sentence of the lesson «Vents and trenches: tubeworms, iron snails, the Chal --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/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/) / [Vents and trenches: tubeworms, iron sn…](https://md.mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/) / 12 # Vents and trenches: tubeworms, iron snails, the Challenger Deep and life without sunlight, sentence 12 Before vents were found in 1977, scientists thought all life on Earth depended on sunlight; some scientists now think life on Earth may have started at vents, but nobody knows for sure. **Who acts:** scientists, life, nobody · **What happens:** find, think, depend, start, know · **To what, where:** vents, 1977 · **Speech:** someone speaks here This is a sentence of the lesson «Vents and trenches: tubeworms, iron snails, the Challenger Deep and life without sunlight» 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 (scientists, life, nobody), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight.lesson:12 # text = Before vents were found in 1977, scientists thought all life on Earth depended on sunlight; some scientists now think life on Earth may have started at vents, but nobody knows for sure. # source = school lesson (ours) # course = biology # lesson = 177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight.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 Before before SCONJ IN _ 4 mark _ _ 2 vents vent NOUN NNS Number=Plur 4 nsubj _ _ 3 were be AUX VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 4 aux:pass _ _ 4 found find VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 9 advcl _ _ 5 in in ADP IN _ 6 case _ _ 6 1977 1977 NUM CD NumForm=Digit|NumType=Card 4 obl _ _ 7 , , PUNCT , _ 4 punct _ _ 8 scientists scientist NOUN NNS Number=Plur 9 nsubj _ _ 9 thought think VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 10 all all DET DT PronType=Tot 11 det _ _ 11 life life NOUN NN Number=Sing 14 nsubj _ _ 12 on on ADP IN _ 13 case _ _ 13 Earth Earth PROPN NNP Number=Sing 11 nmod _ _ 14 depended depend VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 9 ccomp _ _ 15 on on ADP IN _ 16 case _ _ 16 sunlight sunlight NOUN NN Number=Sing 14 obl _ _ 17 ; ; PUNCT , _ 21 punct _ _ 18 some some DET DT PronType=Ind 19 det _ _ 19 scientists scientist NOUN NNS Number=Plur 21 nsubj _ _ 20 now now ADV RB PronType=Dem 21 advmod _ _ 21 think think VERB VB VerbForm=Inf 14 conj _ _ 22 life life NOUN NN Number=Sing 27 nsubj _ _ 23 on on ADP IN _ 24 case _ _ 24 Earth Earth PROPN NNP Number=Sing 22 nmod _ _ 25 may may AUX MD VerbForm=Fin 27 aux _ _ 26 have have AUX VB VerbForm=Inf 27 aux _ _ 27 started start VERB VBN Tense=Past|VerbForm=Part 21 ccomp _ _ 28 at at ADP IN _ 29 case _ _ 29 vents vent NOUN NNS Number=Plur 27 obl _ _ 30 , , PUNCT , _ 33 punct _ _ 31 but but CCONJ CC _ 33 cc _ _ 32 nobody nobody PRON NN Number=Sing|PronType=Neg 33 nsubj _ _ 33 knows know VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 21 conj _ _ 34 for for ADP IN _ 35 case _ _ 35 sure sure ADJ JJ Degree=Pos 33 obl _ _ 36 . . PUNCT . _ 9 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: narrate - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **find** | past · passive | | vents | | 1977 | | | vn discover-84 «NP V NP»: subject=Topic | | 2 | **think** *speech: other* | past | scientists | | | | | | vn consider-29.9-2 «NP V how S»: agent=Agent clause=Theme | | 3 | **depend** | past | all life on Earth | | | | | on sunlight | vn rely-70 «NP V PP.theme S\_ING»: agent=Agent on sunlight=Theme | | 4 | **think** *speech: other* | infinitive | some scientists | | | | now | | vn consider-29.9-2 «NP V how S»: agent=Agent clause=Theme | | 5 | **start** | may · perfect | life on Earth | | | vents | | | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality | | 6 | **know** | present | nobody | | | | | for sure | vn comprehend-87.2-1-1-1 «NP V»: agent=Experiencer | 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:177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight.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): 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: [Vents and trenches: tubeworms, iron sn…, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/11/) - next →: [Vents and trenches: tubeworms, iron sn…, 13](https://md.mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/13/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/)