{HEAD ~ The present invention} relates to {TAIL ~ a device} for bleeding off and cooling hot air in an aircraft engine 
relates to
{ HEAD ~ The present invention } relates to { TAIL ~ a device } for bleeding off and cooling hot air in an aircraft engine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH