a redheaded girl is siting on a seesaw in the garden
The girl is riding the seesaw.
redheaded girl is a girl and riding a seesaw is possible only while siting on a seesaw.
exists e1 s1 x1 x2 x3.(n_garden(x3) & in(e1,x3) & on(e1,x2) & n_seesaw(x2) & Actor(e1,x1) & v_site(e1) & n_girl(x1) & a_redheaded(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_seesaw(x2) & n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1))