Question: The George and Martha sereis of childrens books feature an animal whose name comes from an ancient Greek word that means what?
Sentence (from "Hippopotamus"): Despite their physical resemblance to pigs and other terrestrial even-toed ungulates, the closest living relatives of the Hippopotamidae are cetaceans (whales, dolphins, porpoises, etc.) from which they diverged about .
Relevant evidence: No