Complex sentence: From there he spent several years at the Oak Park Heights prison in Minnesota-At the end, as the result of health concerns, he died in 1986 in the Federal Correctional Institution, Tallahassee, Florida.
Split into simpler sentences: From there he spent several years at the Oak Park Heights prison in Minnesota. In the end, as the result of health concerns, he died in 1986 in the Federal Correctional Institution, Tallahassee, Florida.