Task: Question Answering
Input (English): Question: The aminoacyl-tRNA synthetases: 
 Options:  <1> They participate in the synthesis of the TRANs. <2> They participate in the maturation of the precursors of the TRANs. <3> They are responsible for the synthesis of amino acids. <4> They are responsible for the interpretation of the genetic code. <5> They synthesize parts of the ribosomes.
Output (English): 4