Someone with a black helmet and full bodysuit is kneeling on a skateboard.
A man is doing tricks on a skateboard.
Not everything done on a skateboard are tricks.
exists e1 s1 s2 x1 x2 x3 x4 x5.(on(e1,x5) & n_skateboard(x5) & Actor(e1,x1) & v_kneel(e1) & with(x1,x2) & n_bodysuit(x4) & a_full(s2) & Theme(s2,x4) & n_helmet(x3) & a_black(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_person(x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_skateboard(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_man(x1))