About: http://webisa.webdatacommons.org/416624577

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	Most of the pieces are pentominoes, except for two, a tetromino and a hexomino.
http://www.w3.org/ns/prov#wasQuotedFrom	passionforpuzzles.com