Complex sentence: Akita Sanesue (秋田実季, 1576-1660) was a Japanese samurai, the second son of Ando Chikasue, and a warlord of Dewa.
Split into simpler sentences: Akita Sanesue (秋田実季, 1576-1660) was a Japanese samurai. He was the second son of Ando Chikasue, and warlord of Dewa.