Complex sentence: Alexarchus (Greek: Ἀλέξαρχος ca.350-290 BC) was an Ancient Macedonian scholar and officer, son of Antipater and brother of Cassander.He is mentioned as the founder of a utopian town called Ouranopolis (Sky-city), in Chalcidice.
Split into simpler sentences: Alexarchus (Greek: Ἀλέξαρχος) was an Ancient Macedonian scholar and officer, son of Antipater and brother of Cassander. He lived around 350 to 290 BC. He is mentioned as the founder of a utopian town called Ouranopolis, in Chalcidice.