Complex sentence: Emilo Azcárraga Milmo/Emilio Azcárraga Jr. is known as El Tigre was a hard driving billionaire who built his empire on his family's television network.
Split into simpler sentences: Emilo Azcárraga Milmo/Emilio Azcárraga Jr. is known as El Tigre. Mr. Azcárraga was a hard driving billionaire who built his empire on his family's television network.