About: http://webisa.webdatacommons.org/412364535

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	I will not say how to create a mask or what they do because I am assuming the reader knows what a mask is in photoshop and if they do not than maybe this book is a few steps away than their readiness level.
http://www.w3.org/ns/prov#wasQuotedFrom	amazon.ca