A bearded man on a train
A person travelling by train has a beard.
In a both sentence a person in a train with beard.
exists s1 x1 x2.(a_topic(x1) & on(x1,x2) & n_train(x2) & n_man(x1) & a_bearded(s1) & Theme(s1,x1))
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_have(e2) & n_beard(x4) & by(e1,x3) & n_train(x3) & Actor(e1,x2) & v_travel(e1) & (x1 = x2) & n_person(x1))