Picnic Terror<br>Brad was on a picnic with his family. He had prepared several sandwiches and a pitcher of lemonade. Before they had a chance to eat, a large noise startled them. A bear had crept up behind them and was sniffing at the food. Brad and his family ran away and left the food for the bear.
Brad had prepared several sandwiches and pitchers of lemonade.
Brad had prepared several sandwiches and a pitcher of lemonade (singular), not "pitchers of lemonade" (plural) so the statement is definitely incorrect.
( z1 prepare :ARG0 ( z2 person :name ( z3 name :op "Brad" ) ) :ARG1 ( z4 and :op ( z5 sandwich :quant ( z6 several ) ) :op ( z7 pitcher :cxnsistof ( z8 lemonade ) ) ) )