About: http://webisa.webdatacommons.org/79026447

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	Age, coin, and other problems, including the missing dollar, the tower of Hanoi, the two trains, and Monty Hall.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org