A man waving and waterskiing in the middle of a lake.
An person sits in a car.
A person who sits in a car cannot be waterskiing
exists e1 e2 x1 x2 x3 x4 x5.(n_middle(x4) & a_topic(x1) & in(e2,x4) & of(x4,x5) & n_lake(x5) & Actor(e2,x3) & v_waterskie(e2) & (x1 = x3) & Actor(e1,x2) & v_wave(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(in(e1,x2) & n_car(x2) & Actor(e1,x1) & v_sit(e1) & n_person(x1))