About: http://webisa.webdatacommons.org/451296777

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	Any number that could be expressed as P to the Nth power, where P is a prime number and N is any integer greater than one, is a semi-prime number (assuming that this definition is correct).
http://www.w3.org/ns/prov#wasQuotedFrom	straightdope.com