Older gentleman and a young boy playing with a train set.
Older man playing with a young boy.
Older gentleman is an older man, and train set implies playing.
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 s1 x1 x2 x3 x4.(a_topic(x1) & with(x1,x4) & n_boy(x4) & a_young(s1) & Theme(s1,x4) & n_playing(x1) & of(x1,x3) & n_man(x3) & (x1 = x2) & ne_nam_older(x2))