A young fair-skinned boy rides a play horse at a playground.
There is a young girl riding a horse at a farm.
We know nothing about a young girl riding a horse at a farm.
exists e1 s1 s2 x1 x2 x3 x4.(Recipient(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_play(x4) & at(x2,x3) & n_playground(x3) & n_horse(x2) & n_boy(x1) & a_fair-skinned(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1 e1 s1 x2 x3 x4 x5.((x1 = x2) & at(e1,x5) & n_farm(x5) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_horse(x4) & (x2 = x3) & n_girl(x2) & a_young(s1) & Theme(s1,x2))