premise: A bird is perched on a line of some sort attached to a pole.
hypothesis: A bird is sleeping on a pole line.
explanation_1: A bird who sleeping is not perched.
explanation_2: A bird is either on a pole, or something attached to the pole, but not both at the same time.
explanation_3: The bird can not be perched and sleeping on the pole.
premise_logic: exists e2 e1 x1 x2 x3 x4 x5.(on(e1,x2) & of(x2,x3) & to(e2,x5) & n_pole(x5) & Theme(e2,x4) & v_attach(e2) & (x3 = x4) & n_sort(x3) & n_line(x2) & Theme(e1,x1) & v_perch(e1) & n_bird(x1))
hypothesis_logic: exists e1 x1 x2 x3.(on(e1,x2) & n_line(x2) & of(x2,x3) & n_pole(x3) & Actor(e1,x1) & v_sleep(e1) & n_bird(x1))
premise_sim: exists e2 e1 x1 x2 x3 x4 x5.(v_perch(e1) & v_attach(e2) & to(e2,x5) & on(e1,x2) & of(x2,x3) & n_sort(x3) & n_pole(x5) & n_line(x2) & n_bird(x1) & Theme(e2,x4) & Theme(e1,x1) & (x3 = x4))
hypothesis_sim: exists e1 x1 x2 x3.(v_sleep(e1) & on(e1,x2) & of(x2,x3) & n_pole(x3) & n_line(x2) & n_bird(x1) & Actor(e1,x1))