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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	Drawing Fundamentals: Shading the Sphereby Jon deMartinDepicting light and shadow are essential to creating the illusion of three-dimensional space when drawing subjects such as spheres, ovoids, and the human figure.
http://www.w3.org/ns/prov#wasQuotedFrom	artistdaily.com