People on a street corner looking up at an unknown object next to a man in a wheelchair.
People look at a manhole cover.
Just because there is an unknown object, does not mean it is a manhole cover.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & on(x1,x2) & a_up(s2) & Manner(e1,s2) & at(e1,x5) & to(x6,x7) & in(x7,x8) & n_wheelchair(x8) & n_man(x7) & next(x5,x6) & n_thing(x6) & n_object(x5) & a_unknown(s1) & Theme(s1,x5) & Actor(e1,x4) & v_look(e1) & (x2 = x4) & n_corner(x2) & of(x2,x3) & n_street(x3) & n_people(x1))
exists e1 x1 x2 x3.(at(e1,x2) & n_cover(x2) & of(x2,x3) & n_manhole(x3) & Actor(e1,x1) & v_look(e1) & n_people(x1))