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http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	(d) Federal holiday within the District of Columbia means any day, except Saturdays and Sundays, when the United States Patent and Trademark Office is officially closed for business for the entire day.
http://www.w3.org/ns/prov#wasQuotedFrom	federalregister.gov