<http://webisa.webdatacommons.org/prov/382958550>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218416997> .
<http://webisa.webdatacommons.org/218416997>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<gregladen.com> .
<http://webisa.webdatacommons.org/218416997>	<http://www.w3.org/ns/prov#value>	"That is particularly so for math, where it is for example hard to learn calculus without first mastering multiplication." .
<http://webisa.webdatacommons.org/218416997>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .