<http://webisa.webdatacommons.org/prov/266183476>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/445315726> .
<http://webisa.webdatacommons.org/445315726>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/445315726>	<http://www.w3.org/ns/prov#value>	"As more became interested more centers were founded and their number increased over time, particularly in Germany and Poland." .
<http://webisa.webdatacommons.org/prov/392209399>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/445315726> .
<http://webisa.webdatacommons.org/445315726>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikipedia.org> .