instruction:
In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
question:
Question: What flows like taffy or hot wax? Answer: molten rock
answer:
Molten rock flows like taffy or hot wax.


question:
Question: What is secreted before ejaculation to neutralize acidic urine remaining in the urethra? Answer: clear mucus
answer:
Clear mucus is secreted before ejaculation to neutralize acidic urine remaining in the urethra.


question:
Question: What are the largest known proteins? Answer: titins
answer:

The largest known proteins are titins.