https://w3id.org/framester/conceptnet5/data/en/jam_madison <https://w3id.org/framester/conceptnet5/schema/InstanceOf> <https://w3id.org/framester/conceptnet5/data/en/office_holder> <https://w3id.org/framester/conceptnet5/data/en/person> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/politician> <https://w3id.org/framester/conceptnet5/data/en/president_of_organization> risorse dalla linked data cloud