A man in a center of travel is carrying many things.
A man at a travel center is walking with a lot of things.
at a travel center is another way to say in a center of travel.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_carry(e1) & n_thing(x4) & n_quantity(x4) & in(x1,x2) & of(x2,x3) & n_travel(x3) & n_center(x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(with(e1,x4) & of(x4,x5) & n_thing(x5) & n_lot(x4) & Actor(e1,x1) & v_walk(e1) & at(x1,x2) & n_center(x2) & of(x2,x3) & n_travel(x3) & n_man(x1))