{HEAD ~ The switching apparatus} includes {TAIL ~ one or more sensing devices} for detecting the condition of the system, directly or indirectly 
includes
{ HEAD ~ The switching apparatus } includes { TAIL ~ one or more sensing devices } for detecting the condition of the system , directly or indirectly
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH