A dog leaps to catch a ball in a field.
A dog caught a ball in a field but then dropped it.
Just because a dog leaps to catch a ball doesn't imply the dog then dropped it.
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_leap(e1) & exists e2 x2 x3.(in(e2,x3) & n_field(x3) & Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & n_ball(x2)) & n_dog(x1))
exists e2 e1 s1 x1 x2 x3 x4.(a_then(s1) & Manner(e2,s1) & Theme(e2,x1) & Actor(e2,x4) & v_drop(e2) & n_thing(x1) & n_dog(x4) & Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & in(x2,x3) & n_field(x3) & n_ball(x2) & n_dog(x1))