Task: Text Categorization
Input (English): Question: What is the role of the helicase in replication ?: 
 Options:  <0> Join the single-stranded DNA to prevent the double helix from forming again. <1> Catalyze the union of nucleotides. <2> Correct the errors that occur in the replication. <3> Synthesize a primer to start replication. <4> Mechanically separate the strands of double-stranded DNA.
Output (English): chemistry