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

### Instruction:
Name the party with first elected more than 1999 and position of supervisor for john foust

### Inputs:
table_name: table, columns: ['Position', 'Name', 'Party', 'First elected', 'District']

### Response:
SELECT Party FROM table WHERE First elected > 1999 AND Position = supervisor AND Name = john foust