A person is talking to a newspaper salesman.
the salesperson is trying to sell the person a paper
just because the newspaper salesman is talking to a person doesn't mean he is tying to sell him a paper.
exists e1 x1 x2 x3.(to(e1,x2) & n_salesman(x2) & of(x2,x3) & n_newspaper(x3) & Actor(e1,x1) & v_talk(e1) & n_person(x1))
exists e1 p1 x1 x3.(n_person(x3) & n_salesperson(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & all x2.(n_paper(x2) -> exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_sell(e2) & for(x3,x2))))