a skateboarder doing a trick
A guy jumps in the air on his blue skateboard.
Not all skateboarders are a guy and not all tricks are jumps in the air and not all skateboarders use a blue skateboard.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & (x1 = x2) & n_skateboarder(x1))
exists s1 x1 x2 x3 x4.(n_skateboard(x4) & a_blue(s1) & Theme(s1,x4) & of(x4,x3) & n_male(x3) & n_air(x3) & a_topic(x1) & in(x1,x3) & on(x3,x4) & Time(x1,x2) & n_jump(x2) & n_guy(x1))