PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Of all the numbers, it was the primes (integers such as 2, 3, 5, 7, and 11 whose only divisors are 1 and themselves) that were Erd??s???s Erd??s???s ???best friends.??? As a college freshman, he made a name for himself in mathematical circles with a stunningly simple proof of Chebyshev???s theorem, which says that a prime can always be found between any integer (greater than 1) and its double.
http://www.w3.org/ns/prov#wasQuotedFrom
  • britannica.com