A boy in a white t-shirt does a trick with his skateboard in a skate park.
The boy in the white t-shirt showed off to his friends by doing a trick at the skate park.
The boy who does a trick with his skateboard in a skate park is not necessarily showed off to his friends. He may be riding alone.
exists e1 s1 x1 x2 x3 x4 x5 x6.(with(e1,x4) & in(x4,x5) & n_park(x5) & of(x5,x6) & n_skate(x6) & n_skateboard(x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_trick(x3) & in(x1,x2) & n_t-shirt(x2) & a_white(s1) & Theme(s1,x2) & n_boy(x1))
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_park(x5) & of(x5,x6) & n_skate(x6) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_t-shirt(x2) & a_white(s1) & Theme(s1,x2) & n_boy(x1) & by(e1,e2) & at(e2,x5) & Theme(e2,x4) & Actor(e2,x1) & v_do(e2) & n_trick(x4) & to(e1,x3) & a_off(s2) & Manner(e1,s2) & Actor(e1,x1) & v_show(e1) & in(x1,x2))