A man sells clothing at an open market.
The man is walking up a flight of stairs.
Selling clothing at open market contradicts walking up a flight of stairs
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_market(x3) & a_open(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_sell(e1) & n_clothing(x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_man(x1) & a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & of(x2,x3) & n_stair(x3) & n_flight(x2))