Several Asian people are on a train.
The train is empty.
There cannot be anyone or anything in a train if the train is empty.
exists p1 s1 s2 x1.(exists x2.(on(x1,x2) & n_train(x2)) & n_people(x1) & a_asian(s2) & Theme(s2,x1) & a_several(s1) & Theme(s1,x1))
exists s1 x1.(n_train(x1) & Theme(s1,x1) & a_empty(s1))