A skateboarder sits on a bench while wearing a black helmet.
A skateboarder is doing an ollie.
Doing an ollie is different than sitting on a bench.
exists e2 e1 s1 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_helmet(x3) & a_black(s1) & Theme(s1,x3) & on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_skateboarder(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_ollie(x2) & n_skateboarder(x1))