Complex sentence: Davey Allison died in a helicopter crash at Talladega Superspeedway in 1993 Neil Bonnett died while practicing for the 1994 Daytona 500.
Split into simpler sentences: Davey Allison died in a helicopter crash at Talladega Superspeedway in 1993. Then Neil Bonnett died while practicing for the 1994 Daytona 500.