An elderly man and young boy are sitting on the ground, and playing with a train set.
They are playing with an antique set.
Just because a boy is playing with a train set with an elderly man it does not mean they are playing with an antique set.
exists e2 e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_ground(x4) & with(e2,x8) & n_set(x8) & of(x8,x9) & n_train(x9) & Actor(e2,x5) & v_play(e2) & n_boy(x7) & a_young(s4) & Theme(s4,x7) & n_man(x6) & subset_of(x7,x5) & subset_of(x6,x5) & a_elderly(s3) & Theme(s3,x5) & on(e1,x4) & Actor(e1,x1) & v_sit(e1) & n_boy(x3) & a_young(s2) & Theme(s2,x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 s1 x1.(with(e1,x1) & n_set(x1) & a_antique(s1) & Theme(s1,x1) & Actor(e1,x1) & v_play(e1) & n_thing(x1))