Complex sentence: The Japanese sect Ho No Hana Sanpogyo (法の華三法行 "Hō No Hana Sanpōgyō") is often called the "foot reading cult," because its founder, Hogen Fukunaga, claimed he could diagnose illness by examining people's feet.
Split into simpler sentences: The Japanese sect Ho No Hana Sanpogyo (法の華三法行 "Hō No Hana Sanpōgyō") was a cult founded by Hogen Fukunaga. It is often called the "foot reading cult," because its founder, Hogen Fukunaga, claimed he could diagnose illness by examining people's feet.