Question: Which airport is closer to its central business district, Mercedita Airport or MidAmerica St. Louis Airport?
Sentence (from "MidAmerica St. Louis Airport"): MidAmerica St. Louis Airport (IATA: BLV, ICAO: KBLV, FAA LID: BLV) is a public use airport co-located on the grounds of Scott Air Force Base.
Relevant evidence: No