A man in yellow polo shirt is walking in the crosswalk.
The man is sitting down.
a man walking in the crosswalk and sitting cannot be done together.
exists e1 s1 x1 x2 x3 x4.(n_crosswalk(x4) & in(e1,x4) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_polo(x3) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1.(n_man(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))