<http://webisa.webdatacommons.org/prov/395798304>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/254056342> .
<http://webisa.webdatacommons.org/254056342>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/254056342>	<http://www.w3.org/ns/prov#value>	"Look at two examples of situations in which letters are substituted for numbers." .
<http://webisa.webdatacommons.org/254056342>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<riosalado.edu> .