<http://webisa.webdatacommons.org/220299444>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/387128910>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/220299444> .
<http://webisa.webdatacommons.org/220299444>	<http://www.w3.org/ns/prov#value>	"How can I tell if a string is a number?" .
<http://webisa.webdatacommons.org/220299444>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<perlmonks.org> .