<http://webisa.webdatacommons.org/prov/202842793>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/280233771> .
<http://webisa.webdatacommons.org/280233771>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedsearch.com> .
<http://webisa.webdatacommons.org/280233771>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/280233771>	<http://www.w3.org/ns/prov#value>	"evidence, it is difficult for bodies such as trade unions to pursue such" .