The aerosol container has an aerosol valve from which {HEAD ~ the contents} exit {TAIL ~ the container} 
The aerosol container has an aerosol valve from which { HEAD ~ the contents } exit { TAIL ~ the container }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL