It is {HEAD ~ an object} of the present invention to provide {TAIL ~ a new and improved variable assembly} 
It is { HEAD ~ an object } of the present invention to provide { TAIL ~ a new and improved variable assembly }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL