A boy in a tank top skateboarding.
Boy is at a skateboarding park, doing tricks.
Boy on top of tank skateboarding does not mean he is in a skateboarding park and doing tricks
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_skateboarding(x2) & a_top(s1) & Theme(s1,x2) & of(x2,x3) & n_tank(x3) & n_boy(x1))
exists e1 p1 x1 x2.(ne_nam_boy(x1) & for(p1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & exists x3 x4.(at(x1,x3) & n_park(x3) & of(x3,x4) & n_skateboarding(x4)))