Task: Question Answering
Input (English): Question: Among the differences in the treatment of affective disorders between Beck's cognitive therapy and interpersonal therapy, which of the following is CORRECT? 
 Options:  <1> Interpersonal therapy has been applied to the treatment of bipolar disorder, but Beck's cognitive therapy has not yet. <2> Beck cognitive therapy is a structured therapy with a short number of sessions, while interpersonal therapy does not. <3> Beck's cognitive therapy was created by a psychiatrist, while interpersonal therapy was created by a psychologist. <4> Interpersonal therapy is based on the notion of emotional attachment of evolutionary psychology, while Beck's cognitive therapy does not. <5> Beck's cognitive therapy is one of the psychological treatments that have well established efficacy in major depressive disorder in adults, while interpersonal therapy has not yet.
Output (English): 4