Complex sentence: He studied at Alexandria, and headed a deputation sent to Caligula (in 38) by the Alexandrians to complain of the Jews his charges were answered by Josephus in his "Contra Apionem".
Split into simpler sentences: He studied at Alexandria, and headed a deputation sent to Caligula (in 38) by the Alexandrians to complain of the Jews. His charges were answered by Josephus in his "Contra Apionem".