Two girls in a pool, one catching a ball the other has thrown.
The girls are playing catch in the pool.
Catch can be played between two girls which has one catching the ball when other has thrown it.
exists e1 p1 x1 x2 x3 x4 x5 x6.(n_other(x6) & a_topic(x1) & in(x1,x2) & rel(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_catch(e1) & exists e2.(Actor(e2,x6) & v_throw(e2)) & that(x5,p1) & n_ball(x5) & (x3 = x4) & n_thing(x3) & card_eq_1(x3) & n_pool(x2) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_pool(x3) & n_girl(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_catch(x2))