Task: Question Answering
Input (English): Question: What are the leaders of the Structural / Strategic School of Systemic Therapy? 
 Options:  <1> O'Hanlon and Weiner-Davis. <2> Haley and Minuchin. <3> Weakland and Fisch. <4> Keeney and Ross. <5> Stierlin and Weber.
Output (English): 2