Many children wearing hats aboard a train.
Many children wearing hats aboard a train on a field trip.
It cannot be inferred that the children are on a field trip.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & aboard(x3,x4) & n_train(x4) & n_hat(x3) & (x1 = x2) & n_child(x1) & n_quantity(x1))
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(e1,x5) & n_trip(x5) & of(x5,x6) & n_field(x6) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & aboard(x3,x4) & n_train(x4) & n_hat(x3) & (x1 = x2) & n_child(x1) & n_quantity(x1))