A teenager in a red shirt is skating on a skateboard at a skate park.
A teenager is outside.
in a both sentence skating and outside are different.
exists e1 s1 x1 x2 x3 x4 x5.(at(e1,x4) & n_park(x4) & of(x4,x5) & n_skate(x5) & on(e1,x3) & n_skateboard(x3) & Actor(e1,x1) & v_skate(e1) & in(x1,x2) & n_shirt(x2) & a_red(s1) & Theme(s1,x2) & n_teenager(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_teenager(x1))