The automobile industry, led by General Motors and Ford, offered price discounts from June-August that temporarily boosted sales, but these discounts may have masked underlying weakness.
The automobile industries wanted to boost sales.
The automobile industry wanted to boost sales so offered discounts. 
( z1 want :ARG0 ( z2 industry :mod ( z3 automobile ) ) :ARG1 ( z4 boost :ARG0 z2 :ARG1 ( z5 sell :ARG0 z2 ) ) )