<http://webisa.webdatacommons.org/prov/236294473>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218150900> .
<http://webisa.webdatacommons.org/218150900>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/218150900>	<http://www.w3.org/ns/prov#value>	"b := x includesKey: #a. &quot;test if element is in keys collection&quot;" .
<http://webisa.webdatacommons.org/218150900>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<joyful.com> .