Question: what Airforce base is located in Riverside County, California?
Sentence (from "March Air Reserve Base"): March Air Reserve Base (IATA: RIV, ICAO: KRIV, FAA LID: RIV) (March ARB), previously known as March Air Force Base (March AFB) is located in Riverside County, California between the cities of Riverside and Moreno Valley.
Relevant evidence: Yes