user: ### NOW ANSWER:
Question: What is the value of D 43 O that has a corresponding R 53 + value of R 8?
Columns: ['D 41 O', 'D 42 O', 'D 43 O', 'D 44 O', 'D 45 +', 'R 55 +', 'R 54 +', 'R 53 +', 'R 52 O', 'R 51 O']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['D 20', 'D 19', 'D 18', 'D 17', 'D 16', 'D 15', 'D 14', 'D 13', 'D 12', 'D 11']
SQL:

assistant: SELECT "D 43 O" FROM "Table" WHERE "R 53 +" = 'R 8';