About: http://webisa.webdatacommons.org/427411315

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A task could be slow due to bad memory, disk or other hardware issues (or simply due to handling more data compared to other Map or Reduce tasks).
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com