Man rollerskating in park.
The man is moving around.
The man is moving around by rollerskating.
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_park(x3) & n_rollerskating(x1) & of(x1,x2) & n_man(x2))
exists e1 s1 x1.(n_man(x1) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_move(e1))