Complex sentence: Tanigaki was prepared for a legal career after close to ten years of study, but his father, who represented the second district in Kyoto, died in 1983 and he moved to Kyoto to run for his father's seat.
Split into simpler sentences: Tanigaki was prepared for a legal career after close to ten years of study, but his father, who represented the second district in Kyoto, died in 1983. Tanigaki moved to Kyoto to run for his father's seat.