actor1: Abu Salim Martyrs Brigade
actor2: Shura Council of Islamic Youth
notes: At least six members of Derna's rival Islamist brigades were killed in fighting on Sunday as tensions flared between the town's Abu Saleem Martyrs' Brigade and the Islamic Youth in Derna.
target_text: actor1: Abu Salim Martyrs Brigade, actor2: Shura Council of Islamic Youth