Task: Text Categorization
Input (English): Question: The cyclic electronic flow of photosynthesis: 
 Options:  <0> It uses the components of photosystem II together with plastocyanin and cytochrome b6f. <1> Generates ATP and NADPH. <2> It occurs in situations in which NADPH is in short supply. <3> It generates ATP without reducing NADP +. <4> Free O2.
Output (English): chemistry