Lots of people play in the water at the beach.
People are outside.
A beach is usually outside.
exists e1 x1 x2 x3 x4.(n_beach(x4) & n_water(x3) & at(e1,x4) & in(e1,x3) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_people(x2) & n_lot(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1))