A bird perches in an empty window frame.
The bird dead.
The bird either perches or is dead.
exists e1 s1 x1 x2 x3.(in(e1,x2) & n_frame(x2) & of(x2,x3) & n_window(x3) & a_empty(s1) & Theme(s1,x2) & Actor(e1,x1) & v_perch(e1) & n_bird(x1))
exists x1 x2.(n_dead(x1) & of(x1,x2) & n_bird(x2) & a_topic(x1))