About: http://webisa.webdatacommons.org/425622650

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	It???s difficult, especially in that puzzle, there are so many different configurations of stacking four cubes.
http://www.w3.org/ns/prov#wasQuotedFrom	sheknows.com