Complex sentence: The ALR Piranha was a late 1970s project study of a lightweight multi-role combat aircraft with canard wings of the Swiss Working Group for Aerospace (ALR), which acted as a maintenance and entertainment organization of the Swiss Air Force.
Split into simpler sentences: The ALR Piranha was a late 1970s project of a lightweight multi-role combat aircraft with canard wings. It was a project of the Swiss Working Group for Aerospace (ALR), which is the maintenance and entertainment unit of the Swiss Air Force.