Consider use of SEPIO for representing evidence for expertise

[mbrush]

VIVO ontology and projects is concerned with udnderstanding what evidence exists to suggest a person has expertise, and what degree of expertise, in a particular subject. Consider if aspects of the SEPIO model of evidence may be relevant here. See gdoc here: https://docs.google.com/document/d/1T92B9H7c7R7zrbyZ0DubAc49CxVzt__FNKk3K6bYpys/edit