| http://www.w3.org/ns/prov#value | - d of electrical insulating material and including a hollow cylindrical portion open at the bottom end thereof and closed at the top end thereof by an enlarged disc shaped head portion of a diameter greater than the diameter of the cylindrical portion and adapted to be readily grasped in the palm of an individual's hand in a manner to apply pressure thereagainst, a plurality of window like openings
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