Task: Question Answering
Input (English): Question: A very important industrial method for the formation of carbon-nitrogen bonds is the transposition of Beckman, a reaction that transforms: 
 Options:  <1> A ketone in a pyridine. <2> An oxime in an amine. <3> An aldehyde in an amide. <4> A ketone in an amide. <5> An oxime in an amide.
Output (English): 5