Task: Question Answering
Input (English): Question: According to Tyrer's classification (1989), what type of dissociation does psychogenic amnesia (dissociative amnesia) belong to ?: 
 Options:  <1> The dissociation of the personality. <2> The dissociation of cognitive function. <3> The dissociation of perception. <4> The dissociation of movement or sensation. <5> The dissociation of complex behaviors.
Output (English): 2