Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Shaka Sankofa (born Gary Lee Graham) (September 5, 1963 -- June 22, 2000) was a Texas death-row inmate who was sentenced to death at the age of 18 for the murder of fifty-three-year-old Bobby Grant Lambert in Houston, Texas on May 13, 1981.
For what crime was Shaka Sankofa prosecuted?