There is a red truck behind the horses.
The horses are becoming suspicious of my apples.
There can be either a truck or apples.
exists p1 x1 x3.(n_horse(x3) & exists s1 x2.((x1 = x2) & behind(x2,x3) & n_truck(x2) & a_red(s1) & Theme(s1,x2)))
exists e1 p1 x1 x2.(n_apple(x2) & of(x2,x1) & n_person(x1) & n_horse(x1) & exists s1.(of(s1,x2) & Theme(s1,x1) & a_suspicious(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_become(e1))