Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is 1990, when 1997 is "1R", and when Tournament is "Hamburg"?

### Inputs:
table_name: table, columns: ['Tournament', '1988', '1989', '1990', '1991', '1992', '1993', '1994', '1995', '1996', '1997', '1998', '1999', '2000', '2001', '2002', '2003', '2004', 'Career SR', 'Career Win-Loss']

### Response:
SELECT 1990 FROM table WHERE 1997 = 1r AND Tournament = hamburg