10. A system comprising: a memory comprising: a document structure instance that includes structure components; instructions to: receive a selected structure component from the structure components; select a pre-configured core ontology hierarchy associated with the selected structure component, the pre-configured core ontology hierarchy including a plurality of classes, and a class definition relationships generate a document specific ontology hierarchy based on the selected pre-configured core ontology, wherein the document specific ontology includes a subset of the classes included in the pre-configured core ontology hierarchy; insert into the document specific ontology instance identifier that identifies the selected structure component; and output the hierarchical graph; and a processor configured to execute the instructions.
10. A system comprising: a memory comprising: a document structure instance that includes structure components; instructions to: receive a selected structure component from the structure components; select a pre-configured core ontology hierarchy associated with the selected structure component, the pre-configured core ontology hierarchy including a plurality of classes, and a class definition relationships generate a document specific ontology hierarchy based on the selected pre-configured core ontology, wherein the document specific ontology includes a subset of the classes included in the pre-configured core ontology hierarchy; insert into the document specific ontology instance identifier that identifies the selected structure component; and output the hierarchical graph; and a processor configured to execute the instructions. 11. The system of claim 10 , where the class definition relationship identifies a relationship between at least two of the classes.