Predatory transaction: refers to the use of coercive measures to force one party to transfer the interests of the other (including the transfer of its carrier). Which of the following are not predatory transactions:. ["A has a very precious ancient famous painting. After B knows that he will do everything possible to get it, he will ask A's leader to come forward and use a modern famous painting to change B's painting.", 'Zhang set up a grocery stall. One day, someone came to buy a plastic basin. She took out a dollar and stuffed it into Zhang. "I know you sell one for three yuan. We are neighbors. Just sell me one yuan. " "Take away the basin after talking.', "Xiao Li's family is decorating. Who knows what the budget is wrong and I bought a few square meters of a famous brand wooden floor and needed it urgently. floor.", 'Xiao Wang and Xiao Zhang are two philatelic enthusiasts. They often exchange philatelic products. Although the prices of philatelic products are sometimes very different, both parties are very happy and have no complaints.']