The sixth generation of the Ford Thunderbird is a large personal luxury coupe that was produced by Ford for the 1972 to 1976 model years. A counterpart of the Lincoln Continental Mark IV, this generation of the Thunderbird was the largest ever produced; weighing in at over 5000 lb , they are also the heaviest coupes ever produced by Ford (aside from its Mark IV counterpart).
The sixth generation of the Ford Thunderbird  weighed under seven lbs.
( z1 weigh :ARG1 ( z2 car-make :name ( z3 name :op "Ford" :op "Thunderbird" ) :mod ( z4 generation :ord ( z5 ordinal-entity :value 6 ) ) ) :ARG3 ( z6 under :op ( z7 mass-quantity :quant 7 :unit ( z8 pound ) ) ) )