user: Question: Tell me the revised of mccune reischauer of Yŏn (S) Ryŏn (N)
Columns: ['Hangul', 'Hanja', 'Revised', 'McCune-Reischauer', 'Estimated distribution (2000)*']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['가', '賈', 'Ga', 'Ka', 9090.0]
SQL:

assistant: SELECT "Revised" FROM "Table" WHERE "McCune-Reischauer" = 'Yŏn (S) Ryŏn (N)';