Original sentence: According to the official 9/11 Commission Report, the attack was carried out by nineteen men affiliated with Al-Qaeda, a loose network of radical Sunni Islamists considered by many governments and law enforcement bodies worldwide to be a major terrorist organization.The leader of Al-Qaeda, Osama bin Laden, was named as the person ultimately responsible
Edited sentence: According to the official 9/11 Commission Report, nineteen men affiliated with Al-Qaeda, a loose network of radical Sunni Islamists terrorists, carried out the attack.The report named Osama bin Laden, the leader of Al-Qaeda, as the person ultimately responsible