a	/tv/tv_producer/programs_produced./tv/tv_producer_term/producer_type	b
b	/tv/tv_program/regular_cast./tv/regular_tv_appearance/actor	a
a	/tv/tv_producer/programs_produced./tv/tv_producer_term/producer_type	b
b	/tv/tv_program/regular_cast./tv/regular_tv_appearance/actor	c
