Complex sentence: Kevin Whyman (4 October 1975-1 August 2015) was an English rower, turned air pilot, who died in an aviation accident at the 2015 CarFest.
Split into simpler sentences: Kevin Whyman (4 October 1975-1 August 2015) was an English rower and air pilot. Whyman died in an aviation accident at the 2015 CarFest.