Enter a species  (e.g. Al, Fe): Si
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: MEAM_LAMMPS_Lee_2007_Si__MO_774917820956_000
Enter hexagonal lattice constants 'a' and 'c' (m): 3.063713946252793e-10, 3.933875122538359e-10