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

### Instruction:
What is the composition with an artist of Henry Purdy, a year smaller than 2002, and a mint more than 1,998?

### Inputs:
table_name: table, columns: ['Year', 'Artist', 'Composition', 'Mintage', 'Issue Price']

### Response:
SELECT Composition FROM table WHERE Year < 2002 AND Mintage > 1,998 AND Artist = henry purdy