<http://webisa.webdatacommons.org/prov/156293836>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/158921580> .
<http://webisa.webdatacommons.org/prov/214997305>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/158921580> .
<http://webisa.webdatacommons.org/158921580>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/158921580>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<trishandhalli.com> .
<http://webisa.webdatacommons.org/158921580>	<http://www.w3.org/ns/prov#value>	"They argue that workers in given trades or industries should have the option to choose whether to join a union or not." .