Question: Who are the parents of the goddess the title of the final novel of the "Percy Jackson & the Olympians" series refers to?
Sentence (from "Hestia"): In Ancient Greek religion, Hestia ( ; Greek: Ἑστία , "hearth" or "fireside") is a virgin goddess of the hearth, architecture, and the right ordering of domesticity, the family, the home, and the state.
Relevant evidence: No