means for setting an execution sequence of {HEAD ~ said knowledge sheets} in {TAIL ~ the scenario} with references to the scenario; and 
in
means for setting an execution sequence of { HEAD ~ said knowledge sheets } in { TAIL ~ the scenario } with references to the scenario ; and
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH