CREATE TABLE country (Official_native_language VARCHAR, Country_id VARCHAR)
CREATE TABLE match_season (Country VARCHAR, College VARCHAR)

What are the official languages of the countries of players from Maryland or Duke college?
SELECT T1.Official_native_language FROM country AS T1 JOIN match_season AS T2 ON T1.Country_id = T2.Country WHERE T2.College = "Maryland" OR T2.College = "Duke"
SELECT "T1"."Official_native_language" FROM "country" AS "T1" JOIN "match_season" AS "T2" ON ("Duke" = "T2"."College" OR "Maryland" = "T2"."College") AND "T1"."Country_id" = "T2"."Country"