Task: Question Answering
Input (English): Question: Which of the following definitions of fluorimetry is correct? 
 Options:  <1> Fluorimetry is less sensitive than spectrometry. <2> Fluorimetry is less specific than spectrometry. <3> Unsaturated cyclic molecules are frequently fluorescent. <4> The fluorescence is directly proportional to the temperature. <5> None of the options is correct.
Output (English): 3