A border collie jumps over a bed with a tennis ball in its mouth.
A puppy chasing a ball in a bedroom.
We can imply that the collie is in a bedroom but that is never stated in the first sentence. In the second we find out it was in a bedroom.
exists x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & over(x1,x4) & with(x4,x5) & in(x5,x7) & n_mouth(x7) & of(x7,x1) & n_thing(x1) & n_ball(x5) & of(x5,x6) & n_tennis(x6) & n_bed(x4) & n_jump(x1) & of(x1,x3) & n_collie(x3) & of(x1,x2) & n_border(x2))
all x1.(n_ball(x1) -> exists s1 x2 x3.(a_topic(x2) & in(x2,x3) & n_bedroom(x3) & for(x2,x1) & n_chasing(x2) & a_puppy(s1) & Theme(s1,x2)))