A toddler is in a green playpen.
The toddler is safe.
Being in a playpen does not necessarily imply that a toddler is safe.
exists p1 x1.(exists s1 x2.(in(x1,x2) & n_playpen(x2) & a_green(s1) & Theme(s1,x2)) & n_toddler(x1))
exists s1 x1.(n_toddler(x1) & Theme(s1,x1) & a_safe(s1))