<http://webisa.webdatacommons.org/prov/49576020>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/224626738> .
<http://webisa.webdatacommons.org/224626738>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<isidore-of-seville.com> .
<http://webisa.webdatacommons.org/224626738>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/224626738>	<http://www.w3.org/ns/prov#value>	"Then, in 1972, a scientific team headed by Dr. Walter McCrone reported that its ink contained anatase, a form of titanium which first appeared in ink during the 1920s." .