-id,main_region_id,canonical_pokedex_id,name
-1,1,2,Generation I
-2,2,7,Generation II
-3,3,4,Generation III
-4,4,6,Generation IV
+id,main_region_id,canonical_pokedex_id,identifier
+1,1,2,generation-i
+2,2,7,generation-ii
+3,3,4,generation-iii
+4,4,6,generation-iv
+5,5,8,generation-v