{HEAD ~ The apparatus} includes {TAIL ~ a body structure} having a rotational axis, a discrete hollow structure and at least one dampening member 
includes
{ HEAD ~ The apparatus } includes { TAIL ~ a body structure } having a rotational axis , a discrete hollow structure and at least one dampening member
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH