Complex sentence: Oussama Abdallah Kassir (born 12 January 1966) is a Lebanese-born Swedish militant Islamist and criminal, who served prison sentence in Sweden on a number of violence and drug related offenses, and was later convicted by an American court for conspiring to support terrorism.
Split into simpler sentences: Oussama Abdallah Kassir (born 12 January 1966) is a Lebanese-born militant Islamist and criminal. He is a citizen of Sweden who served prison sentence in Sweden on a number of violence and drug related offenses, and was later convicted by an American court for conspiring to support terrorism.