<http://webisa.webdatacommons.org/102052623>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/185811972>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/102052623> .
<http://webisa.webdatacommons.org/102052623>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<psu.edu> .
<http://webisa.webdatacommons.org/102052623>	<http://www.w3.org/ns/prov#value>	"An undo facility is an essential component of most interactive applications." .