Complex sentence: Daniel James "Dan" White (September 2,1946--October 21,1985) was a San Francisco supervisor who assassinated San Francisco Mayor George Moscone and Supervisor Harvey Milk, on Monday, November 27,1978, at City Hall.
Split into simpler sentences: Daniel James "Dan" White (September 2,1946--October 21,1985) was a member of the San Francisco Board of Supervisors. He assassinated assassinated San Francisco Mayor George Moscone and Supervisor Harvey Milk, on Monday, November 27,1978, at City Hall.