<http://webisa.webdatacommons.org/prov/54169316>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/415290711> .
<http://webisa.webdatacommons.org/prov/54715222>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/415290711> .
<http://webisa.webdatacommons.org/415290711>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/415290711>	<http://www.w3.org/ns/prov#value>	"For a refresher, letters such as X and Y are used to denote numbers that are unknown." .
<http://webisa.webdatacommons.org/415290711>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<memegenerator.net> .