A young fair-skinned boy rides a play horse at a playground.
The boy is at recess.
The boy riding a play horse at the playground isn't necessarily at recess, he could just be playing on the weekend.
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.(n_boy(x1) & exists x2.(at(x1,x2) & n_recess(x2)))