Task: Question Answering
Input (English): Question: The reaction of benzene with tertbutyl chloride, in the presence of aluminum trichloride, is an example of: 
 Options:  <1> Nucleophilic aromatic substitution reaction. <2> Electrophilic aromatic substitution. <3> Addition of halogens. <4> Acid catalyzed hydrolysis. <5> Obtaining alkyl halides.
Output (English): 2