| http://www.w3.org/ns/prov#value | - In each case, the play participant preferably first presents his or her identifying card, key and or bracelet or other identifying features to a reader, which uniquely identifies the play participant and tracks and/or records his or here experience electronically. [0043] In FIG. 3A the play participant inserts a requested quest object(s) (e.g., balls 150) into a suction tube 135.
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