The statement of Possession of an Expertise or Skill by an Agent.
by-agent / is-agent-in1 : An Expertise and Skills Possession references the Agent who posesses the Expertise and Skills.
possesses / is-possessed-through : An Expertise and Skills Possession references the Expertise and Skills that the Agent possesses.
is-evidenced-by / provides-evidence-of : An Expertise and Skills Possession can be evidenced by any number of Documents.