instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Clear mucus is secreted before ejaculation to neutralize acidic urine remaining in the urethra.
answer:
What is secreted before ejaculation to neutralize acidic urine remaining in the urethra?


question:
Comparing genome sequences provides clues to evolution and development.
answer:
Comparing what sequences provides clues to evolution and development?


question:
Chemistry and physics are fields in physical.
answer:

Chemistry and physics are fields in what type of science?