Question: What is the name of a platonic solid, which is of the significant works of Euthydemus?
Paraphrase: What is the name of a platonic solid, which is of the widespread works of Euthydemus?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q188745 wdt:P138 ?answer . ?answer wdt:P800 wd:Q6499786}
Answer: Plato