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*Entries in MRHIER that define multiple contexts (HCD field) per CUI will trigger additional tracking within the LexBIG environment.
*Each link is tracked via the corresponding contextual chain(Path To Root field). To do this, we add association qualifiers that tag the association between each participating concept. The qualifier name is 'HCD' and the value will be the HCD field value from the MRHIER file.
*An individual association between two concepts can participate in multiple context chains by assigning additional association qualifiers. A complete flow across the entire chain of links (essentially reconstructing PTR field) can be derived by recursive evaluation of surrounding links that have the same context qualifications. Since each concept can carry multiple text presentations, property qualifiers will be used to track the individual terms used in each context.
*As with associations, multiple qualifiers can be assigned to each text property. Once again, the qualifier name will be 'HCD' and the value will be the HCD field value from the MRHIER file.
*In order to query context-specific relationships, we can first use the API to filter the relationships a concept participates in, then query neighboring nodes to determine the complete context path, and finally map back to specific terms through the registered HCD qualifiers .

OBO Mapping

The OBO each remark in the document header will be combined and put into the coding scheme entityDescription.

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