A woman rapels through barren treetops.
A woman tries to imitate a gorilla.
The woman may not be imitating a gorilla while she rapels.
exists e1 s1 x1 x2.(through(e1,x2) & n_treetop(x2) & a_barren(s1) & Theme(s1,x2) & Actor(e1,x1) & v_rapel(e1) & n_woman(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_imitate(e2) & n_gorilla(x2)) & n_woman(x1))