A man in gray is pushing his bicycle down the street.
The man is rollerblading down the street.
A person wold not be pushing a bike if he were rollerblading.
exists e1 x1 x2 x3 x4.(n_street(x4) & Theme(e1,x3) & Actor(e1,x1) & v_push(e1) & down(x3,x4) & n_bicycle(x3) & of(x3,x1) & n_male(x1) & in(x1,x2) & n_gray(x2) & n_man(x1))
exists e1 s1 x1 x2.(n_street(x2) & n_man(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_rollerblade(e1))