She did not have a rational answer for why she had come down here.

Self-determinism is the only possible way a computer can be built to give rational answers.

Whether he did or not, Reg could make no rational answer except the truth.

Together we may be able to come up with some sort of rational answer to what's going on here.

It was a relief to be able to understand a question and make a rational answer.

The novel simultaneously raised a "fundamental question" about the meaning of life and offers one "rational answer".

Inspiration itself could not furnish a rational answer to that question.

And such a question as this to someone who can give me a rational answer.

Population control - a responsible birthing program - is the rational answer to world hunger.

So the rational answer is, he didn't put it all together.