Enter a species  (e.g. Al, Fe): Sn
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: MEAM_LAMMPS_KoKimKwon_2018_Sn__MO_129364204512_000
Enter hexagonal lattice constants 'a' and 'c' (m): 4.483347360366707e-10, 3.357040034860998e-10