The man is standing next to a bird cage.
A man looks for his bird in a empty cage.
Just because a man is standing next to a bird cage doesn't imply looks for his bird in a empty cage.
exists e1 x1 x2 x3.(n_man(x1) & to(e1,x2) & n_cage(x2) & of(x2,x3) & n_bird(x3) & r_next(e1) & Actor(e1,x1) & v_stand(e1))
exists e1 s1 x1 x2 x3.(for(e1,x2) & in(x2,x3) & n_cage(x3) & a_empty(s1) & Theme(s1,x3) & n_bird(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_look(e1) & n_man(x1))