1. A method comprising: ingesting a first body of information for a domain of knowledge; receiving a natural language question corresponding to the domain of knowledge, the natural language question being in the form of a complete human language question; parsing the natural language question to identify a focus; mining the body of information for entities and relationships among entities based on the focus; generating a targeting document for the domain of knowledge containing a first relationship and a second relationship, the first and second relationships being among entities mined from the first body of information; recording mining data for relationships in the targeting document in support of an importance criteria; ranking the first relationship with respect to the second relationship according to the importance criteria as a set of ranking data; and storing the targeting document including the set of ranking data in the first body of information for on-demand access during a question-answer session corresponding to the domain of knowledge.