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

### Instruction:
what is the image quality when the multiple sessions is x, the authentication is ✓ and the date is may 15, 2007?

### Inputs:
table_name: table, columns: ['Project', 'License', 'Date', 'Protocol', 'Technology', 'Server', 'Client', 'Web Client', 'Multiple Sessions', 'Encryption', 'Authentication', 'Data Compression', 'Image Quality', 'Color Quality', 'File Transfer', 'Clipboard Transfer', 'Chat', 'Relay', 'HTTP Tunnel', 'Proxy']

### Response:
SELECT Image Quality FROM table WHERE Multiple Sessions = x AND Authentication = ✓ AND Date = may 15, 2007