A snowboarder rides a snowboard down a railing beside a flight of steps.
A man is watching t.v. at home.
Person who is on railing outdoors can not be at home at the same time.
exists e1 x1 x2 x3 x4 x5.(beside(e1,x4) & of(x4,x5) & n_step(x5) & n_flight(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_railing(x3) & n_snowboard(x2) & n_snowboarder(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_home(x3) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_t.v(x2) & n_man(x1))