A lady is in a wheelchair on the corner of a street, and a man in a white shirt is about to cross the street.
There is a lady in a motorized wheelchair on the corner of the street.
A wheelchair doesn't necessarily imply a motorized wheelchair.
exists p1 p2 s1 s2 x1 x2 x3 x5 x7.(n_street(x7) & n_corner(x5) & Topic(s2,p2) & Actor(s2,x2) & a_about(s2) & exists e1.(Theme(e1,x7) & Actor(e1,x2) & v_cross(e1)) & in(x2,x3) & n_shirt(x3) & a_white(s1) & Theme(s1,x3) & n_man(x2) & exists x4 x6.(in(x1,x4) & on(x4,x5) & of(x5,x6) & n_street(x6) & n_wheelchair(x4)) & n_lady(x1))
exists p1 x1 x4 x5.(n_street(x5) & n_corner(x4) & exists e1 x2 x3.((x1 = x2) & in(x2,x3) & on(x3,x4) & of(x4,x5) & n_wheelchair(x3) & Theme(e1,x3) & v_motorize(e1) & n_lady(x2)))