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

### Instruction:
What is the average Worst score for Mario Lopez as the Best dancer and Tango as the Dance?

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

### Response:
SELECT AVG Worst score FROM table WHERE Best dancer = mario lopez AND Dance = tango