<http://webisa.webdatacommons.org/138859745>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/409247056>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/138859745> .
<http://webisa.webdatacommons.org/138859745>	<http://www.w3.org/ns/prov#value>	"several existing areas such as cryptography, approximation algorithms," .
<http://webisa.webdatacommons.org/138859745>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<columbia.edu> .