| http://www.w3.org/ns/prov#value | - f said units in parallel; means in the control logic ofsaid first unit for passing poll control from said first unit to said second unit including means for energizing said select line in response to a signal on said polling request line from a requesting unit; and means in the control logic of said second unit responsive to said select line for accepting said poll con trol by energizing said dese
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