Task: Question Generation
Input (English): A priori and a posteriori -- These terms are used with respect to reasoning (epistemology) to distinguish ``necessary conclusions from first premises'' (i.e., what must come before sense observation) from ``conclusions based on sense observation'' (which must follow it). Thus, the two kinds of knowledge, justification, or argument, may be glossed:
Output (English): science begins with the premise that knowledge should first be acquired through observation