Question: What organization associated with Mexico-Peru relations is headquartered in United States capital Washington D.C.?
Sentence (from "Organization of American States"): The Organization of American States (Spanish: "Organización de los Estados Americanos" , Portuguese: "Organização dos Estados Americanos" , French: "Organisation des États américains" ), or the OAS or OEA, is a continental organization founded on 30 April 1948, for the purposes of regional solidarity and cooperation among its member states.
Relevant evidence: No