--- title: Stars spend about 90% of their lives steadily fusing hydrogen into h… — How stars live · tree and pragmatics description: Stars spend about 90% of their lives steadily fusing hydrogen into helium, a stage astronomers call the main sequence. Who acts: Stars, astronomers. A sentence of the lesson «How stars live» of the space course of Mova's primary school with its dependency tree and the pragmatics of every clause. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/space/18-how-stars-live/9/) [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/) / [Space](https://md.mova.elamur.ai/free/en/corpora/school/space/) / [How stars live](https://md.mova.elamur.ai/free/en/corpora/school/space/18-how-stars-live/) / 9 # How stars live, sentence 9 Stars spend about 90% of their lives steadily fusing hydrogen into helium, a stage astronomers call the main sequence. **Who acts:** Stars, astronomers · **What happens:** spend, fuse, call · **To what, where:** hydrogen, main sequence · **Speech:** someone speaks here This is a sentence of the lesson «How stars live» of the space 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 (Stars, astronomers), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:space:018-how-stars-live.lesson:9 # text = Stars spend about 90% of their lives steadily fusing hydrogen into helium, a stage astronomers call the main sequence. # source = school lesson (ours) # course = space # lesson = 018-how-stars-live.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 Stars star NOUN NNS Number=Plur 2 nsubj _ _ 2 spend spend VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 about about ADV RB _ 4 advmod _ _ 4 90 90 NUM CD NumForm=Digit|NumType=Card 5 nummod _ _ 5 % % SYM NN Number=Sing 2 obj _ _ 6 of of ADP IN _ 8 case _ _ 7 their their PRON PRP$ Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs 8 nmod:poss _ _ 8 lives life NOUN NNS Number=Plur 5 nmod _ _ 9 steadily steadily ADV RB _ 10 advmod _ _ 10 fusing fuse VERB VBG Tense=Pres|VerbForm=Part 2 advcl _ _ 11 hydrogen hydrogen NOUN NN Number=Sing 10 obj _ _ 12 into into ADP IN _ 13 case _ _ 13 helium helium NOUN NN Number=Sing 10 obl _ _ 14 , , PUNCT , _ 18 punct _ _ 15 a a DET DT Definite=Ind|PronType=Art 17 det _ _ 16 stage stage NOUN NN Number=Sing 13 appos _ _ 17 astronomers astronomer NOUN NNS Number=Plur 18 nsubj _ _ 18 call call VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 16 acl:relcl _ _ 19 the the DET DT Definite=Def|PronType=Art 21 det _ _ 20 main main ADJ JJ Degree=Pos 21 amod _ _ 21 sequence sequence NOUN NN Number=Sing 18 obj _ _ 22 . . PUNCT . _ 2 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 | **spend** | present | Stars | | | | | | vn consume-66-1 «NP V NP»: agent=Agent %=Asset | | 2 | **fuse** | gerund | Stars *not said here* | hydrogen | | | | into helium; steadily *property* | vn mix-22.1-1-1 «NP V NP PP.co-patient»: agent=Agent hydrogen=Patient into helium=Co-Patient | | 3 | **call** | present | a astronomers | the main sequence | | | | | vn initiate\_communication-37.4.2-1 «NP V NP.recipient»: agent=Agent sequence=Recipient | 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:space:018-how-stars-live.lesson:9`. **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: [How stars live, 8](https://md.mova.elamur.ai/free/en/corpora/school/space/18-how-stars-live/8/) - next →: [How stars live, 10](https://md.mova.elamur.ai/free/en/corpora/school/space/18-how-stars-live/10/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/space/18-how-stars-live/)