 Complete the following phrase:  After Yarankash, a Frankish slave, assassinated Zengi in September 1146, Joscelin II recaptured Edessa in October 1146. Receiving no help from the other Crusader states, the city was again lost in November, as Joscelins expedition was driven out by Zengis son Nur ad-Din. The Second Crusade, called in response to the fall of Edessa, shifted its focus to 