--- title: The collapsed core can become a neutron star, only about 20 km acros… — How stars die · tree and pragmatics description: The collapsed core can become a neutron star, only about 20 km across, as wide as a city, yet heavier than the Sun; spinning ones sweep radio beams past the Earth like a lighthouse, and we call them pulsars. Who acts: collapsed core, spinning ones, we. A sentence of the lesson «How stars die» of the --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/space/19-how-stars-die/3/) [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 die](https://md.mova.elamur.ai/free/en/corpora/school/space/19-how-stars-die/) / 3 # How stars die, sentence 3 The collapsed core can become a neutron star, only about 20 km across, as wide as a city, yet heavier than the Sun; spinning ones sweep radio beams past the Earth like a lighthouse, and we call them pulsars. **Who acts:** collapsed core, spinning ones, we · **What happens:** collapse, become, spin, sweep, call · **To what, where:** neutron star, radio beams, Earth, beams · **Speech:** someone speaks here This is a sentence of the lesson «How stars die» 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 (collapsed core, spinning ones, we), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:space:019-how-stars-die.lesson:3 # text = The collapsed core can become a neutron star, only about 20 km across, as wide as a city, yet heavier than the Sun; spinning ones sweep radio beams past the Earth like a lighthouse, and we call them pulsars. # source = school lesson (ours) # course = space # lesson = 019-how-stars-die.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): R5-strong ×2, R7-rel-agree ×1 1 The the DET DT Definite=Def|PronType=Art 3 det _ _ 2 collapsed collapse VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 3 amod _ _ 3 core core NOUN NN Number=Sing 5 nsubj _ _ 4 can can AUX MD VerbForm=Fin 5 aux _ _ 5 become become VERB VB VerbForm=Inf 0 root _ _ 6 a a DET DT Definite=Ind|PronType=Art 8 det _ _ 7 neutron neutron NOUN NN Number=Sing 8 compound _ _ 8 star star NOUN NN Number=Sing 5 xcomp _ _ 9 , , PUNCT , _ 13 punct _ _ 10 only only ADV RB _ 13 advmod _ _ 11 about about ADV RB _ 12 advmod _ _ 12 20 20 NUM CD NumForm=Digit|NumType=Card 13 nummod _ _ 13 km km NOUN NN Number=Sing 8 appos _ _ 14 across across ADV RB _ 13 advmod _ _ 15 , , PUNCT , _ 20 punct _ _ 16 as as ADV RB _ 17 advmod _ _ 17 wide wide ADJ JJ Degree=Pos 13 amod _ _ 18 as as ADP IN _ 20 case _ _ 19 a a DET DT Definite=Ind|PronType=Art 20 det _ _ 20 city city NOUN NN Number=Sing 17 obl _ _ 21 , , PUNCT , _ 23 punct _ _ 22 yet yet CCONJ CC _ 23 cc _ Agree=R7-rel-agree|Haiku=23:advmod|HaikuPos=ADV:RB:_ 23 heavier heavy ADJ JJR Degree=Cmp 17 conj _ Agree=R5-strong|Haiku=20:parataxis 24 than than ADP IN _ 26 case _ _ 25 the the DET DT Definite=Def|PronType=Art 26 det _ _ 26 Sun Sun PROPN NNP Number=Sing 23 obl _ _ 27 ; ; PUNCT : _ 30 punct _ _ 28 spinning spin VERB VBG VerbForm=Ger 29 amod _ _ 29 ones one NOUN NNS Number=Plur 30 nsubj _ _ 30 sweep sweep VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 23 advcl _ _ 31 radio radio NOUN NN Number=Sing 32 compound _ _ 32 beams beam NOUN NNS Number=Plur 30 obj _ _ 33 past past ADP IN _ 35 case _ _ 34 the the DET DT Definite=Def|PronType=Art 35 det _ _ 35 Earth Earth PROPN NNP Number=Sing 30 obl _ Agree=R5-strong|Haiku=32:nmod|HaikuPos=NOUN:NN:Number=Sing 36 like like ADP IN _ 38 case _ _ 37 a a DET DT Definite=Ind|PronType=Art 38 det _ _ 38 lighthouse lighthouse NOUN NN Number=Sing 30 obl _ _ 39 , , PUNCT , _ 42 punct _ _ 40 and and CCONJ CC _ 42 cc _ _ 41 we we PRON PRP Case=Nom|Number=Plur|Person=1|PronType=Prs 42 nsubj _ _ 42 call call VERB VBP Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin 30 conj _ _ 43 them they PRON PRP Case=Acc|Number=Plur|Person=3|PronType=Prs 42 obj _ _ 44 pulsars pulsar NOUN NNS Number=Plur 42 xcomp _ _ 45 . . PUNCT . _ 5 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **collapse** | participle | | | | | | | vn other\_cos-45.4 «NP.patient V»: agent=Patient | | 2 | **become** | can | the collapsed core | a neutron star | | | | | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient | | 3 | **spin** | gerund | | | | | | | vn roll-51.3.1 «NP.theme V»: agent=Theme | | 4 | **sweep** | present | spinning ones | radio beams | | the Earth | | like a lighthouse | vn funnel-9.3-1-1 «NP V NP PP.trajectory»: agent=Agent beam=Theme past earth=Trajectory | | 5 | **call** | present | we | beams *= beam* | | | | | vn initiate\_communication-37.4.2-1 «NP V NP.recipient»: agent=Agent they=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:019-how-stars-die.lesson:3`. **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): R5-strong ×2, 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: [How stars die, 2](https://md.mova.elamur.ai/free/en/corpora/school/space/19-how-stars-die/2/) - next →: [How stars die, 5](https://md.mova.elamur.ai/free/en/corpora/school/space/19-how-stars-die/5/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/space/19-how-stars-die/)