A man is bending down to look at something on the sidewalk.
A man leans down to look at a bug on the sidewalk.
Just because he is looking at something on the ground doesn't mean that something is a bug.
exists e1 p1 s1 x1 x2 x4.(n_sidewalk(x4) & Topic(e1,p1) & exists e2 x3.(at(e2,x3) & on(x3,x4) & n_thing(x3) & Actor(e2,x1) & v_look(e2)) & a_down(s1) & Manner(e1,s1) & Actor(e1,x2) & v_bend(e1) & n_man(x2) & n_man(x1))
exists e1 p1 s1 x1 x2 x4.(n_sidewalk(x4) & Topic(e1,p1) & exists e2 x3.(at(e2,x3) & on(x3,x4) & n_bug(x3) & Actor(e2,x1) & v_look(e2)) & a_down(s1) & Manner(e1,s1) & Actor(e1,x2) & v_lean(e1) & n_man(x2) & n_man(x1))