Barnes served on the Maryland Public Service Commission.

Entity and relation annotations:
id: 0
type: entity
value: text: Barnes
labels: <Person>
id: 1
type: entity
value: text: the Maryland Public Service Commission
labels: <Organization>
id: 2
type: entity
value: text: the Maryland
labels: <Location>
type: relation
to_id: 1
labels: Person:affiliated_with:Organization
from_id: 0