| http://www.w3.org/ns/prov#value | - id fill material within said bag; said bag further including closure means for closing said fill opening to prevent egress of said fill material from said bag, wherein said bag is generally spherical in shape, having an equator defined by a line extending circumferentially around a periphery of the spherical shape, an axis and an equatorial band, said equatorial band having greater rigidity than t
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