Question: What year was the first component of the space station which Cygnus CRS OA-6 completed 5 flights to launched into orbit?
Sentence (from "Cygnus CRS Orb-2"): Cygnus CRS Orb-2, also known as Orbital Sciences CRS Flight 2, was the third flight of the Orbital Sciences' unmanned resupply spacecraft Cygnus, its third flight to the International Space Station, and the fourth launch of the company's Antares launch vehicle.
Relevant evidence: No