<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Historic_district_in_Middlesex_County,_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Historic_districts_in_Middlesex_County,_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Build> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://caligraph.org/ontology/location>	<http://caligraph.org/resource/Ayer,_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/2000/01/rdf-schema#label>	"Ayer Main Street Historic District" .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Ayer Main Street Historic District" .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Historic_districts_on_the_National_Register_of_Historic_Places_in_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://caligraph.org/ontology/nrhpReferenceNumber>	"88000193" .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Ayer,_Massachusetts> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Ayer_Main_Street_Historic_District> .
<http://caligraph.org/resource/Ayer_Main_Street_Historic_District>	<http://caligraph.org/ontology/yearOfConstruction>	"1872" .