Complex sentence: Essays in Prewar Japanese American History By Yuji Ichioka Page 300 Oka was formerly employed at the Yorozu Choho, and a friend of Toshihiko Sakai, who started the Heimin Shimbun (English: The Commoner's News) along with Kotoku Shusui.
Split into simpler sentences: Essays in Prewar Japanese American History By Yuji Ichioka Page 300 Oka was formerly employed at the Yorozu Choho. He was friends with Toshihiko Sakai, who started the Heimin Shimbun (English: The Commoner's News) along with Kotoku Shusui.