Question: What is the eponym of Cummingtonite, which has a size of 23.1?
Paraphrase: What is the eponym of Cummingtonite, which has a size of 23.1?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q418873 wdt:P138 ?answer . ?answer wdt:P2046 ?x FILTER(contains(?x , '23.1'))}
Answer: Cummington