In the FIGURE, {HEAD ~ the medical ventilator} 10 provides {TAIL ~ ventilation} to a patient 12 via a conduit 14 
provides
In the FIGURE , { HEAD ~ the medical ventilator } 10 provides { TAIL ~ ventilation } to a patient 12 via a conduit 14
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH