A man and a boy are standing next to a train.
A man and boy wait for the friend to get off the train.
Standing next to a train doesn't imply they wait for the friend.
exists e1 x1 x2 x3 x4.(to(e1,x4) & n_train(x4) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & subset_of(x3,x1) & n_boy(x3) & subset_of(x2,x1) & n_man(x2))
exists p1 s1 x1 x2 x3 x4 x5.(n_train(x5) & n_friend(x4) & a_topic(s1) & for(s1,x4) & Topic(x4,p1) & exists e1 s2.(a_off(s2) & Manner(e1,s2) & Theme(e1,x5) & Actor(e1,x4) & v_get(e1)) & n_wait(x2) & of(x2,x3) & n_boy(x3) & n_man(x1) & subset_of(x2,s1) & subset_of(x1,s1))