Question: How long is the island where one school of the Kyūshū Collegiate American Football Association is located?
Sentence (from "Okinawa Island"): The Greater Naha area, home to the prefectural seat of Okinawa Prefecture on the southwestern part of Okinawa Island, has roughly 800,000 of the island's 1.3 million residents, while the city itself is home to about 320,000.
Relevant evidence: No