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

### Instruction:
What is the dance that has priscilla presley is the worst dancer(s), and the worst score of 21?

### Inputs:
table_name: table, columns: ['Dance', 'Best dancer(s)', 'Best score', 'Worst dancer(s)', 'Worst score']

### Response:
SELECT Dance FROM table WHERE Worst dancer(s) = priscilla presley AND Worst score = 21