Task: Question Answering
Input (English): Question: With what explanatory theory of childhood phobias is the Napalkov effect more closely related? 
 Options:  <1> The theory of the two factors of Mowrer. <2> The theory of the incubation of Eysenck. <3> The theory of social learning of Bandura. <4> The bioinformational theory of Lang's emotion. <5> The anxiety sensitivity theory of Reiss.
Output (English): 2