Task: Question Answering
Input (English): Question: Which of the following enzymes acts in the pentose phosphate route ?: 
 Options:  <1> Aldolase <2> Glucose 6-phosphate dehydrogenase. <3> Glycogen phosphorylase. <4> Fosfofructoquinasa-1. <5> Pyruvate kinase.
Output (English): 2