<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Sustainability_advocate> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://caligraph.org/ontology/deathYear>	"1994" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Sustainability_advocates> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/1994_death> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Independent_scientist> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/John_D._Hamaker> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:American_mechanical_engineers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Outline_of_sustainable_agriculture> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Hugo_Christiaan_Hamaker> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/1914_birth> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/20th-century_American_non-fiction_writer> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Non-fiction_environmental_writers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/American_agronomist> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1914_births> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/American_mechanical_engineer> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://caligraph.org/ontology/birthYear>	"1914" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:20th-century_American_non-fiction_writers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/American_non-fiction_environmental_writer> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Independent_scientists> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/2004/02/skos/core#altLabel>	"H.C. Hamaker" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"John D. Hamaker" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1994_deaths> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_American_scientists> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_non-fiction_environmental_writers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/2004/02/skos/core#altLabel>	"John D. Hamaker#Remineralization benefits" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_American_non-fiction_environmental_writers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/American_ecologist> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_non-fiction_writers> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:American_agronomists> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/2000/01/rdf-schema#label>	"John D. Hamaker" .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:American_ecologists> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/20th-century_American_engineer> .
<http://caligraph.org/resource/John_D._Hamaker>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:20th-century_American_engineers> .