<http://webisa.webdatacommons.org/prov/28887254>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/204923907> .
<http://webisa.webdatacommons.org/204923907>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/204923907>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<pubmedcentralcanada.ca> .
<http://webisa.webdatacommons.org/204923907>	<http://www.w3.org/ns/prov#value>	"Data comes from a heterogeneous mixture of hospitals that vary in the services and types of procedures they can provide." .