Ten people swimming in calm water.
The people are shopping at the mall.
It is not possible to be swimming in water and shopping at the mall at the same time.
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_water(x3) & a_calm(s1) & Theme(s1,x3) & Actor(e1,x2) & v_swim(e1) & (x1 = x2) & n_people(x1) & card_eq_10(x1))
exists e1 x1 x2.(n_mall(x2) & n_people(x1) & at(e1,x2) & Actor(e1,x1) & v_shop(e1))