Conversation so far:
what does Harry Reasoner have to do with the assassination?
Harry Reasoner took part in covering the John F. Kennedy assassination
what was Harry Reasoner part in the cover of the John F. Kennedy assassination?
Harry Reasoner took over the anchor chair after Collingwood tossed it to him at 5:49 p.m. EST and opened with the repeat of an announcement by Frank Stanton
what else did Harry Reasoner  have to do with the assissination of John F. Kennedy?
Harry Reasoner reported on the arrival of President Kennedy's body in Washington, D.C., and provided details regarding Lee Harvey Oswald

Question: who is lee harvey oswald?
Self-contained rewrite: who is lee harvey oswald harry reasoner reported details of?