A person in a white hat and yellow top enters a bus while a man in an orange shirt looks down in the foreground.
A man wearing a hat boards a city bus while another man looks down at his shoes.
The fact that the man is looking down does not tell us what he is looking at.  Nothing implies that he is specifically looking at his shoes or just at the floor or at something else on the floor.
exists e1 p1 s1 s2 x1 x2 x3 x4 x5 x9.(n_foreground(x9) & exists e2 s3 x6 x7 x8.(a_down(s3) & Manner(e2,s3) & in(e2,x9) & Actor(e2,x6) & v_look(e2) & in(x6,x7) & n_shirt(x7) & of(x7,x8) & n_orange(x8) & n_man(x6)) & while(e1,p1) & Theme(e1,x5) & Actor(e1,x1) & v_enter(e1) & n_bus(x5) & in(x1,x2) & n_top(x4) & a_yellow(s2) & Theme(s2,x4) & n_hat(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_white(s1) & Theme(s1,x2) & n_person(x1))
exists x1 x2 x8.(a_topic(x1) & all x3 x4.((n_bus(x3) & of(x3,x4) & n_city(x4)) -> exists e1 p1 x5 x6.(exists e2 s1 x7.(a_down(s1) & Manner(e2,s1) & at(e2,x8) & Actor(e2,x7) & v_look(e2) & n_man(x7) & -(x7 = x1)) & while(e1,p1) & Theme(e1,x5) & Actor(e1,x2) & v_wear(e1) & for(x5,x3) & n_board(x5) & of(x5,x6) & n_hat(x6))) & n_shoe(x8) & of(x8,x1) & n_male(x1) & n_man(x1) & n_man(x1) & (x1 = x2))