Cargo is being loaded onto a ship.
a ship is being loaded with packages
Just because something is cargo does not mean that it is packages.
exists e1 x1 x2.(ne_nam_cargo(x1) & onto(e1,x2) & n_ship(x2) & Theme(e1,x1) & v_load(e1))
exists e1 x1 x2.(with(e1,x2) & n_package(x2) & Theme(e1,x1) & v_load(e1) & n_ship(x1))