Question: What philosopher along with Alcibiades, son of Cleinias, and General Archestratus was sent too take Potidean hostages and demolish the city wall during 432 B.C.? 
Sentence (from "Alcibiades"): He was the last famous member of his mother's aristocratic family, the Alcmaeonidae, which fell from prominence after the Peloponnesian War.
Relevant evidence: No