Several Asian people are on a train.
People in China are on a train.
Not all Asian people are in China.
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 p1 x1 x2.(ne_geo_china(x2) & exists x3.(on(x1,x3) & n_train(x3)) & in(x1,x2) & n_people(x1))