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EF Education First, a for-profit education company specializing in language learning, said it has been selected as the Official Supplier of Language Training Services for the Rio 2016 Olympic and Paralympic Games. A Swedish company with its North American headquarters in Cambridge, EF Education First, or EF, said that plans call for it to teach English to 100,000 staffers for the Rio games as well as to nearly 700 000 candidates for the Olympic volunteer program, contractors, and school children in Rio State. A private company, EF is not disclosing the value of its contract with the Rio 2016 Organizing Committee. This will be the fourth Olympics for EF, which does much of its work in teaching English as a second language.