<http://webisa.webdatacommons.org/421084360>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .
<http://webisa.webdatacommons.org/prov/354809780>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/421084360> .
<http://webisa.webdatacommons.org/421084360>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/421084360>	<http://www.w3.org/ns/prov#value>	"In my opinion model development and observation are the most difficult parts." .