a man doing tricks on a bmx bike
a man doing tricks at the x games
just because he is on a bmx does not mean he is competing at the x games
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_bike(x4) & of(x4,x5) & n_bmx(x5) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(n_game(x4) & of(x4,x5) & n_x(x5) & a_topic(x1) & at(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & (x1 = x2) & n_man(x1))