A man stands behind his fish stand waiting for customers.
Someone is helping his customers.
Not everyone waiting for customers is helping them.
exists e2 e1 x1 x2 x3 x4.(for(e1,e2) & for(e2,x4) & n_customer(x4) & Actor(e2,x1) & v_wait(e2) & behind(e1,x2) & n_stand(x2) & of(x2,x3) & n_fish(x3) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_help(e1) & n_customer(x2) & of(x2,x1) & n_male(x1) & n_person(x1))