--- title: In 2015 the LIGO detectors in the USA first caught gravitational wav… — Black holes · tree and pragmatics description: In 2015 the LIGO detectors in the USA first caught gravitational waves, ripples in space from two black holes merging about 1.3 billion light years away. Who acts: LIGO detectors, two black holes. A sentence of the lesson «Black holes» of the space course of Mova's primary school with its dependency --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/space/25-black-holes/14/) [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/) / [Black holes](https://md.mova.elamur.ai/free/en/corpora/school/space/25-black-holes/) / 14 # Black holes, sentence 14 In 2015 the LIGO detectors in the USA first caught gravitational waves, ripples in space from two black holes merging about 1.3 billion light years away. **Who acts:** LIGO detectors, two black holes · **What happens:** catch, merge · **To what, where:** gravitational waves, 2015 This is a sentence of the lesson «Black holes» 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 (LIGO detectors, two black holes), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:space:025-black-holes.lesson:14 # text = In 2015 the LIGO detectors in the USA first caught gravitational waves, ripples in space from two black holes merging about 1.3 billion light years away. # source = school lesson (ours) # course = space # lesson = 025-black-holes.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 ×4 1 In in ADP IN _ 2 case _ _ 2 2015 2015 NUM CD NumForm=Digit|NumType=Card 10 obl _ _ 3 the the DET DT Definite=Def|PronType=Art 5 det _ _ 4 LIGO LIGO PROPN NNP Number=Sing 5 compound _ _ 5 detectors detector NOUN NNS Number=Plur 10 nsubj _ _ 6 in in ADP IN _ 8 case _ _ 7 the the DET DT Definite=Def|PronType=Art 8 det _ _ 8 USA USA PROPN NNP Number=Sing 5 nmod _ _ 9 first first ADV RB NumForm=Word|NumType=Ord 10 advmod _ _ 10 caught catch VERB VBD Mood=Ind|Tense=Past|VerbForm=Fin 0 root _ _ 11 gravitational gravitational ADJ JJ Degree=Pos 12 amod _ _ 12 waves wave NOUN NNS Number=Plur 10 obj _ _ 13 , , PUNCT , _ 14 punct _ _ 14 ripples ripple NOUN NNS Number=Plur 12 conj _ _ 15 in in ADP IN _ 16 case _ _ 16 space space NOUN NN Number=Sing 14 nmod _ _ 17 from from ADP IN _ 20 case _ _ 18 two two NUM CD NumForm=Word|NumType=Card 20 nummod _ _ 19 black black ADJ JJ Degree=Pos 20 amod _ _ 20 holes hole NOUN NNS Number=Plur 12 nmod _ _ 21 merging merge VERB VBG VerbForm=Ger 20 acl _ _ 22 about about ADV RB _ 24 advmod _ Agree=R5-strong|Haiku=23:advmod 23 1.3 1.3 NUM CD NumForm=Digit|NumType=Card 24 compound _ Agree=R5-strong|Haiku=26:nummod 24 billion billion NUM CD NumForm=Word|NumType=Card 26 nummod _ _ 25 light light NOUN NN Number=Sing 26 compound _ _ 26 years year NOUN NNS Number=Plur 27 obl _ Agree=R5-strong|Haiku=21:obl 27 away away ADV RB _ 21 advmod _ Agree=R5-strong|Haiku=26:advmod 28 . . PUNCT . _ 10 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **catch** | past | the LIGO detectors in the USA | gravitational waves and ripples in space | | 2015 | | from two black holes; first *property* | vn get-13.5.1 «NP V NP PP.source»: agent=Agent wave=Theme from hole=Source | | 2 | **merge** | gerund | two black holes *not said here* | | | | | away *property* | vn mix-22.1-1-1 «NP V»: agent=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:space:025-black-holes.lesson:14`. **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 ×4. **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: [Black holes, 13](https://md.mova.elamur.ai/free/en/corpora/school/space/25-black-holes/13/) - next →: [Black holes, 15](https://md.mova.elamur.ai/free/en/corpora/school/space/25-black-holes/15/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/space/25-black-holes/)