A rollerskater does tricks on a half pipe.
A person does a trick wearing rollerskates.
A rollerskater will be wearing rollerskates.
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_pipe(x3) & of(x3,x4) & n_half(x4) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_rollerskater(x1))
exists e1 e2 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_rollerskate(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_person(x1))