Complex sentence: The first two baseball clubs were founded in 1897: the "Almendares" Baseball Club owned by Francisco Alamo Armas, and the "Borinquen" Baseball Club owned by Santos Filippi.
Split into simpler sentences: The first two baseball clubs were founded in 1897. They were the Almendares Baseball Club, owned by Francisco Alamo Armas and the Borinquen Baseball Club owned by Santos Filippi.