Complex sentence: The resulting AIFV developed by the Greek company, named'Kentaurus' ('ΚΕΝΤΑΥΡΟΣ'), was officially introduced in the "Defendory" Arms Exhibition in Athens in 1998, and at that time was one of the most advanced AIFV's in the world.
Split into simpler sentences: The resulting AIFV developed by the Greek company, named'Kentaurus' ('ΚΕΝΤΑΥΡΟΣ'), was officially introduced at the "Defendory" Arms Exhibition in Athens in 1998. At the time was one of the most advanced AIFV's in the world.