A young skateboarder on a ramp.
A girl is learning how to skateboard
Doesn't say that the young skateboarder is a girl.
exists s1 x1 x2.(a_topic(x1) & on(x1,x2) & n_ramp(x2) & n_skateboarder(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_manner(x2) & exists e2 x3.(Actor(e2,x3) & v_skateboard(e2)) & n_girl(x1))