1. Payments received for the purpose of maintenance, education, or training by a student, apprentice, or business trainee who is or was immediately before visiting a Contracting State a resident of the other Contracting State and who is present in the first-mentioned State for the purpose of his full-time education or training shall not be taxed in that State, provided that such payments arise outside that State.
2. A professor or teacher who visits one of the Contracting States for a period not exceeding two years for the purpose of teaching or engaging in research at a university, college or other recognized educational institution in that Contracting State and who was immediately before that visit a resident of the other Contracting State, shall be exempted from tax by the first-mentioned Contracting State on any remuneration for such teaching or research for a period not exceeding two years from the date he first visits that State for such purpose. This paragraph shall only apply to income from research if such research is undertaken by the professor or teacher in the public interest and not primarily for the benefit of some other private person or persons.
