user: Question: What is Ring Name, when Stable is Kasugano, and when Birthplace is z Mtskheta , Georgia?
Columns: ['Ring name', 'Current rank', 'Debut', 'Stable', 'Birthplace']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Aminishiki Ryūji', 'e0 Maegashira 1 West', '1997-1', 'Isegahama', 'Aomori']
SQL:

assistant: SELECT "Ring name" FROM "Table" WHERE "Stable" = 'Kasugano' AND "Birthplace" = 'z Mtskheta , Georgia';