About: http://webisa.webdatacommons.org/20950094

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Then the hardest step in Dirichlet???s proof is to establish that, for any nonsquare integer D, D is a quadratic residue for at least half the primes.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com