A red-haired girl is jumping in the air with a skateboard near her feet.
The girl is a good skateboarder.
The girl is not necessarily a skateboarder just because there is a skateboard near her feet and if she is, she is not necessarily good.
exists e1 s1 x1 x2 x3 x4.(n_foot(x4) & of(x4,x2) & n_female(x2) & n_air(x2) & with(e1,x3) & near(x3,x4) & n_skateboard(x3) & in(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_girl(x1) & a_red-haired(s1) & Theme(s1,x1))
exists p1 x1.(n_girl(x1) & exists s1 x2.((x1 = x2) & n_skateboarder(x2) & a_good(s1) & Theme(s1,x2)))