A man in black shorts is walking down the sidewalk.
There is a gang member walking down the street.
Just because a man in black shorts is walking down the sidewalk does not imply that there is a gang member walking down the street.
exists e1 s1 s2 x1 x2 x3.(n_sidewalk(x3) & a_down(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_shorts(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 x5.(n_street(x5) & exists e1 x2 x3 x4.((x1 = x2) & down(e1,x5) & Actor(e1,x4) & v_walk(e1) & (x2 = x4) & n_member(x2) & of(x2,x3) & n_gang(x3)))