The CXU knowledge_type field is constrained to axiom, derived, or prescribed values so that stored knowledge is categorized by its epistemic status.

knowledge_type: axiom|derived|prescribed

— PYRANA_Internal_Knowledge_Graph_Specification.md

Every CXU stored in the graph follows this structure:

— PYRANA_Internal_Knowledge_Graph_Specification.md

### 5.2 Knowledge Type Guidelines

— PYRANA_Internal_Knowledge_Graph_Specification.md