<http://webisa.webdatacommons.org/prov/412313401>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/15491061> .
<http://webisa.webdatacommons.org/15491061>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/15491061>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<lse.ac.uk> .
<http://webisa.webdatacommons.org/15491061>	<http://www.w3.org/ns/prov#value>	"The question of whether immigrants make a positive or negative contribution to a state???s economy has been the subject of intense controversy across countries in Europe." .