question: Of his published works , what topics were they covering ?
answer: 60 in pure mathematics , 20 in physics , and 60 in applied mathematics
turker_answer: Of his published works , 60 covered topics in pure mathematics , 20 in physics , and 60 in applied mathematics .
rule-based: Of his published works , they were covering 60 in pure mathematics , 20 in physics , and 60 in applied mathematics .