Complex sentence: The Arado Ar 80 was a pre-World War II fighter aircraft design by Arado Flugzeugwerke ("Arado"), designed to compete for the Luftwaffe's first fighter contract.
Split into simpler sentences: The Arado Ar 80 was a pre-World War II fighter aircraft, designed by Arado Flugzeugwerke. It ws intended to compete for the Luftwaffe's first fighter contract.