Abstract: In some examples, example-based ontology training for natural language query processing may include identifying, based on an analysis of a query by using an ontology, a term in the query that includes an unknown meaning. The query may be in a natural language format. Based on a context of the query, a proposed definition of the term may be inferred. Based on the proposed definition of the term, a request may be generated to provide a definition of the term, or to modify the proposed definition of the term. A reply to the request may be received. The reply may be in the natural language format. The reply may be analyzed to update the proposed definition of the term. The ontology may be modified to include the updated definition of the term. Based on the modified ontology, a response to the query may be generated.