Questions about the nature of time by Einstein's general relativity are involved with the philosophy of science.
  Students of all ages use questions in their learning of topics, and the skill of having learners creating "investigatable" questions is a central part of inquiry education
?"Some languages have different particles (for example the French "si", the German "doch" or the Swedish, Danish, and Norwegian "jo") to answer negative questions (or negative statements) in an affirmative way; they provide a means to express contradiction

