Q: Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.
Relationship: 'be leader of', Argument/Subject 1: 'yassin', Argument/Subject 2: 'hama'
A:
After the assassination of the spiritual leader of the Hamas , Sheikh Ahmed Yassin , by the Israeli army , the leaders of the Hamas , the al-Aqsa-Brigades and the Islamic Jihad sought revenge .