Question: All Nippon Airways has a main domestic hubb at what aiport that is one of the two primary airports that serve the Greater Tokyo Area?
Sentence (from "All Nippon Airways"): In May 2010, ANA's total passenger traffic was up year-on-year by 7.8%, and its international services grew by 22% to 2.07 million passengers in the first five months of 2010.
Relevant evidence: No