Complex sentence: Cornsilk was hired by Cherokee Nation as a research analyst to perform genealogical research on Cherokee families seeking registration in the Cherokee Nation of Oklahoma, and was assistant director of admissions at Bacone College in Muskogee, Oklahoma from 1989 to 1994.
Split into simpler sentences: Cornsilk was hired by the Cherokee Nation as a research analyst to perform genealogical research on Cherokee families seeking registration in the Cherokee Nation of Oklahoma. He also was assistant director of admissions at Bacone College in Muskogee, Oklahoma from 1989 to 1994.