A baby and a young boy playing.
The baby and the young boy were having a great time.
Just because they are playing doesn't mean they are having a great time.
exists s1 s2 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & n_playing(x2) & of(x2,x3) & n_boy(x3) & a_young(s2) & Theme(s2,x2) & subset_of(x1,s1) & n_baby(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_boy(x3) & a_young(s1) & Theme(s1,x3) & n_baby(x2) & Theme(e1,x4) & Actor(e1,x1) & v_have(e1) & n_time(x4) & a_great(s2) & Theme(s2,x4) & subset_of(x3,x1) & subset_of(x2,x1))