<http://webisa.webdatacommons.org/364976744>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .
<http://webisa.webdatacommons.org/364976744>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/139598807>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/364976744> .
<http://webisa.webdatacommons.org/364976744>	<http://www.w3.org/ns/prov#value>	"However, certain aspects of Hadoop performance, especially scalability, are not well understood." .