If I don't automatically know the answer to the question at hand, then I will try to either just grab someone I know that can answer that question, or if it's something that I know I can reasonably get the answer to with a couple minutes research, I would just simply ask a person for their patience and just try and quickly get the information that I need. If not, again, I just go to someone else, like a manager or another co-worker that has a little bit more knowledge in that field.