Complex sentence: Not so long after the defeat, near Leucon Arcesilaus became very ill after drinking a poisonous drink containing a deadly fish called a sea-hare, which according to Plutarch this fish when consumed is fatal to people.
Split into simpler sentences: Not so long after the defeat, near Leucon Arcesilaus became very ill after drinking a poisonous drink containing a deadly fish called a sea-hare. According to Plutarch this fish when consumed is fatal to people.