A child is enjoying the ducks on a fall day.
A child is watching the ducks in the park.
Enjoying doesn't imply watching.The fact that a child is enjoying the ducks doesn't imply that the child is in the park.
exists e1 x1 x2 x3 x4.(n_duck(x2) & on(e1,x3) & n_day(x3) & of(x3,x4) & n_fall(x4) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_child(x1))
exists e1 x1 x2 x3.(n_park(x3) & n_duck(x2) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_child(x1))