# Role ### Definition A role describes the relationship between two [ontologies](/guides/glossary/ontology.md). A single [instance](/guides/glossary/instance.md) of an ontology can have multiple roles. Examples of roles are: 'account holder', 'signatory', 'power of attorney', and 'beneficial owner'. ### Example: Peter Müller, an instance of the ontology ‘Person’, can take the role of ‘Account Holder’ in Contract #1234. At the same time, Müller can take the role of ‘Beneficiary Owner’ in Contract #5678 and the role of ‘Power of Attorney’ in Contract #9101. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.atfinity.io/guides/glossary/role.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.