{TAIL ~ The present invention} provides apparatus for tracking {HEAD ~ the sun} which reorients itself immediately in the absence of sunlight 
{ TAIL ~ The present invention } provides apparatus for tracking { HEAD ~ the sun } which reorients itself immediately in the absence of sunlight
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH