1. A method programmed in a computing environment for providing prose text reporting, the method comprising: utilizing a prose text definition ontology having linguistic knowledge and a base report domain ontology; said prose text definition ontology comprising: references to said base report domain ontology; connectors for modeling adjacent linguistic relations to connect concepts from said base report domain ontology; and sequences for modeling relations among concepts from said base report domain ontology; wherein said prose text definition ontology is consulted with concepts from said report domain ontology to provide prose text that expresses said concepts and relationships involved in the consultation; wherein said base report domain ontology imports knowledge items pertaining to a patient, defines said knowledge items as report domain concepts of said base report domain ontology, identifies relationships between said report domain concepts, and identifies constraints on said report domain concepts, whereby the knowledge items may be identified, classified and validated in the context of said report domain ontology; wherein said concepts, relationships and constraints are presented to said prose text definition ontology to be expressed as prose text using said references, connectors and sequences.