If the correct answer to the question "Who did it?" is nobody, does it mean that the question "Who did it?" tells a lie?

Answer 1

"Who did it" is an inquiry, not a statement of fact. And "who" is not the name of a person. In either case no lie is even possible.

As posed, neither her the question nor the inquirer seem intent on swaying the reader's point of view so again no lie is being told, no lie is being encouraged, It's merely a totally neutral request for additional information.

The only possible lie might com from the response to this question but we're not privy to that.

Answer 2

No. A question itself is not capable of deceit. It's a way of seeking information or clarification. If the true answer to 'Who did it?' is 'nobody,' it means there was no one responsible for the action, and the question is not lying; it's just trying to find out who is to blame.