Three children playing on rocks near a lake
children try to skip rocks
Even though the kids are playing on rocks does not mean they are playing skip rock.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & near(x3,x4) & n_lake(x4) & n_rock(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & card_eq_3(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_skip(e2) & n_rock(x2)) & n_child(x1))