A large crowd waiting at a train crossing.
People are waiting for the train.
large crowd are made of people.
exists e1 e2 s1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & Actor(e2,x4) & v_cross(e2) & (x3 = x4) & n_train(x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_train(x2) & for(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))