Task: Question Answering
Input (English): Question: The completion of the translation: 
 Options:  <1> It takes place in AUG codons. <2> It is produced by incorporation of an empty tRNA. <3> It occurs when the ribosome reaches the end of the mRNA. <4> It does not consume energy. <5> It is mediated by proteins with structure similar to tRNA.
Output (English): 5