In this task you're given a question and you have to paraphrase the question to create the output question while retaining the meaning of the original question.

Why are so few drugs with promising animal trials tested in humans?
How much do clinical trials for drugs cost?

Fellatio: How long does the average blowjob last?
Does a man suck dick better than a woman?

What is the best source of learning astronomy in Pakistan?
What are the best sources to learn astronomy?