The bird's feet are grasping the window tightly.
there is a bird resting
The bird grasping the window tightly is resting.
exists e1 s1 x1 x2 x3.(n_window(x3) & n_foot(x2) & of(x2,x1) & n_bird(x1) & a_tightly(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_grasp(e1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_rest(e1) & (x2 = x3) & n_bird(x2))