Complex sentence: Brenda Howard (December 24 1946--June 28 2005) was an American bisexual rights activist and sex-positive feminist, who was an important figure in the modern LGBT rights movement.
Split into simpler sentences: Brenda Howard (December 24 1946--June 28 2005) was an American bisexual rights activist and sex-positive feminist. Howard was an important figure in the modern LGBT rights movement.