Simplify the following text for a Grade 8 native English-speaking person.
Original: Khomeini , having been exiled from Iran in 1964 , took up residence in Iraq , at the Shi'ite holy city of An Najaf .
Simplified: Khomeini , having been exiled from Iran in 1964 , began living in Iraq , at the Shi'ite holy city of An Najaf .