( The lack of a trade-in program proved to be a serious impediment to the sale of Graham-Bradley tractors from Graham-Paige Motors Corp. by Sears in the late 1930s . )
( DET NOUN ADP DET PROPN NOUN VERB PART VERB DET ADJ NOUN ADP DET NOUN ADP ADJ NOUN ADP PROPN PROPN PROPN ADP PROPN ADP DET ADJ NOUN . )