--- title: Solar power became about ten times cheaper between 2010 and 2020: wh… — Worries and hopes: climate, the UN, space, AI, a… · tree and pragmatics description: Solar power became about ten times cheaper between 2010 and 2020: what cost ten pounds in 2010 cost about one pound in 2020. Who acts: Solar power. A sentence of the lesson «Worries and hopes: climate, the UN, space, AI, and is the world getting better?» of the history course of Mova's primary schoo --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/8/) [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/) / [History](https://md.mova.elamur.ai/free/en/corpora/school/history/) / [Worries and hopes: climate, the UN, sp…](https://md.mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/) / 8 # Worries and hopes: climate, the UN, space, AI, and is the world getting better?, sentence 8 Solar power became about ten times cheaper between 2010 and 2020: what cost ten pounds in 2010 cost about one pound in 2020. **Who acts:** Solar power · **What happens:** become, cost · **To what, where:** ten pounds, 2010, one pound, 2020 This is a sentence of the lesson «Worries and hopes: climate, the UN, space, AI, and is the world getting better?» of the history 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 (Solar power), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:history:079-worries-and-hopes-is-the-world-getting-better.lesson:8 # text = Solar power became about ten times cheaper between 2010 and 2020: what cost ten pounds in 2010 cost about one pound in 2020. # source = school lesson (ours) # course = history # lesson = 079-worries-and-hopes-is-the-world-getting-better.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 ×1 1 Solar solar ADJ JJ Degree=Pos 2 amod _ _ 2 power power NOUN NN Number=Sing 3 nsubj _ _ 3 became become VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 4 about about ADV RB _ 5 advmod _ _ 5 ten ten NUM CD NumForm=Word|NumType=Card 6 nummod _ _ 6 times time NOUN NNS Number=Plur 3 obl:unmarked _ _ 7 cheaper cheap ADJ JJR Degree=Cmp 3 xcomp _ _ 8 between between ADP IN _ 9 case _ _ 9 2010 2010 NUM CD NumForm=Digit|NumType=Card 7 obl _ _ 10 and and CCONJ CC _ 11 cc _ _ 11 2020 2020 NUM CD NumForm=Digit|NumType=Card 9 conj _ _ 12 : : PUNCT : _ 14 punct _ _ 13 what what PRON WP PronType=Int 14 nsubj _ _ 14 cost cost VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 19 csubj _ _ 15 ten ten NUM CD NumForm=Word|NumType=Card 16 nummod _ _ 16 pounds pound NOUN NNS Number=Plur 14 obj _ _ 17 in in ADP IN _ 18 case _ _ 18 2010 2010 NUM CD NumForm=Digit|NumType=Card 14 obl _ _ 19 cost cost VERB VBD Mood=Ind|Tense=Past|VerbForm=Fin 3 conj _ _ 20 about about ADV RB _ 21 advmod _ Agree=R5-strong|Haiku=22:case|HaikuPos=ADP:IN:_ 21 one one NUM CD NumForm=Word|NumType=Card 22 nummod _ _ 22 pound pound NOUN NN Number=Sing 19 obj _ _ 23 in in ADP IN _ 24 case _ _ 24 2020 2020 NUM CD NumForm=Digit|NumType=Card 19 obl _ _ 25 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **become** | past | Solar power | | | | time | cheap *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient | | 2 | **cost** | past | | ten pounds | | 2010 | | | vn cost-54.2 «NP V NP.value»: agent=Theme pound=Value | | 3 | **cost** | past | Solar power *not said here* | one pound | | 2020 | | | vn cost-54.2 «NP V NP.value»: agent=Theme pound=Value | 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:history:079-worries-and-hopes-is-the-world-getting-better.lesson:8`. **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 ×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: [Worries and hopes: climate, the UN, sp…, 7](https://md.mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/7/) - next →: [Worries and hopes: climate, the UN, sp…, 9](https://md.mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/9/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/)