In such a bag of hybrid seed offered for sale, the Governmental regulations require that the hybrid seed be {TAIL ~ at least about 95%} of {HEAD ~ the total seed} 
In such a bag of hybrid seed offered for sale , the Governmental regulations require that the hybrid seed be { TAIL ~ at least about 95 % } of { HEAD ~ the total seed }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD