user: Question: Who is the Original west end performer for the character Martha?
Columns: ['Character', 'Original Broadway performer', 'Original Australian performer', 'Original West End performer', '2005 World AIDS Day Benefit Dream Cast']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Mary Lennox', 'Daisy Eagan', 'Samantha Fiddes / Sarah Ogden', 'Natalie Morgan', 'Jaclyn Neidenthal']
SQL:

assistant: SELECT "Original West End performer" FROM "Table" WHERE "Character" = 'Martha';