Older gentleman and a young boy playing with a train set.
The man and boy are playing with build a blocks.
A train set is not a set of build a blocks.
exists s1 s2 x1 x2 x3 x4 x5 x6.(ne_nam_gentleman(x1) & (x1 = x2) & ne_nam_older(x2) & a_topic(s1) & subset_of(x3,s1) & with(x3,x5) & n_set(x5) & of(x5,x6) & n_train(x6) & n_playing(x3) & of(x3,x4) & n_boy(x4) & a_young(s2) & Theme(s2,x3) & subset_of(x1,s1))
exists e2 e1 p1 x1 x2 x3.(n_man(x1) & Theme(e2,x3) & Actor(e2,x1) & v_build(e2) & n_block(x3) & for(p1,e1) & Actor(e1,x2) & v_play(e1) & exists x4.(with(x2,x4) & (x1 = x4)) & n_boy(x2))