| http://www.w3.org/ns/prov#value | - lgaria at the beginning of the visit to the United States and who is temporarily in the United States to teach or carry on research at a school, college, university or other recognized educational or research institution is exempt from U.S. income tax for a period not exceeding 2 years from the date of arrival in the United States on income received for teaching or carrying on research.This exempt
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