Complex sentence: Eventually becoming a motorcycle legend, It is believed Arthur taught the famous daredevil Evel Knievel had to do a wheelie on a Harley Davidson in 1968 after a happenstance meeting they had while both were hunting elk in Yellowstone National Park.
Split into simpler sentences: Eventually becoming a motorcycle legend, It is believed Arthur taught the famous daredevil Evel Knievel how to do a wheelie on a Harley Davidson in 1968. After a happenstance meeting they had while both were hunting elk in Yellowstone National Park.