About: http://webisa.webdatacommons.org/288494444

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	Since aluminum is a relatively soft material, scars are formed at the lines.(A, B) on the tray (22) after repeated folding and unfolding movement of the tray (22), thereby diminishing the aesthetic appeal of the blackboard (3).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com