What makes a question a philosophical question?

Question:

What makes a question a philosophical question?

This is the topic of our reaction paper. I more or less have an idea what to say, but I would really want to know what you think.

Best Answer - Chosen by Asker: A philosophical question is one that cannot be answered by appealing to empirical evidence to determine its validity. In other words, it is a question of concept, analysis, and logic, not a question that can be answered by observing or measuring the world.