What are the official languages of the countries of players from Maryland or Duke college?
create table country (official_native_language varchar, country_id varchar, PRIMARY KEY (official_native_language)); create table match_season (country varchar, college varchar, PRIMARY KEY (country))
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"