Caviler does rope tricks on horseback for parade.
A skilled rider does tricks.
Do rope tricks on horseback is a form of doing tricks.
exists e1 x1 x2 x3 x4.(ne_org_caviler(x1) & Theme(e1,x2) & Actor(e1,x1) & v_rope(e1) & on(x2,x3) & for(x3,x4) & n_parade(x4) & n_horseback(x3) & n_trick(x2))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_rider(x1) & a_skilled(s1) & Theme(s1,x1))