<http://webisa.webdatacommons.org/402163377>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/192711375>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/402163377> .
<http://webisa.webdatacommons.org/prov/353205312>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/402163377> .
<http://webisa.webdatacommons.org/402163377>	<http://www.w3.org/ns/prov#value>	"Even more difficult is the problem of normalization, which would be necessary for operations such as comparison or searching." .
<http://webisa.webdatacommons.org/402163377>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<unicode.org> .