<http://webisa.webdatacommons.org/257131566>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackoverflow.com> .
<http://webisa.webdatacommons.org/257131566>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/481867513>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/257131566> .
<http://webisa.webdatacommons.org/257131566>	<http://www.w3.org/ns/prov#value>	"In mathematical logic and computer science, the lambda calculus, also written as the ??-calculus, is a formal system for studying computable recursive functions, a la computability theory, and related phenomena such as variable binding and substitution." .