A man on rollerblades skates around some cones on a wide walkway.
The woman is riding a skateboard.
A man and the woman are different sexes.  Skates and riding are different actions.  Rollerblades and a skateboard are different objects.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & around(x2,x4) & on(x4,x5) & n_walkway(x5) & a_wide(s1) & Theme(s1,x5) & n_cone(x4) & n_skate(x2) & of(x2,x3) & n_rollerblade(x3) & n_man(x1))
exists e1 x1 x2.(n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x2))