Two children searching the ground near a body of water where boats are docked.
Two children swim in a large pond.
The ones who swim cannot be searching the ground simultaneously.
exists e1 p1 x1 x2 x3 x4 x5.(n_ground(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_search(e1) & near(x3,x4) & exists e2 x6.(Theme(e2,x6) & v_dock(e2) & n_boat(x6)) & where(x4,p1) & of(x4,x5) & n_water(x5) & n_body(x4) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_pond(x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_swim(e1) & n_child(x1) & card_eq_2(x1))