user: ### NOW ANSWER:
Question: which Helium has a Argon of −189.6?
Columns: ['Physical property', 'Helium', 'Neon', 'Argon', 'Krypton', 'Xenon']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Boiling point (°C)', '−268.8', '−245.9', '−185.8', '−151.7', '−106.6']
SQL:

assistant: SELECT "Helium" FROM "Table" WHERE "Argon" = '−189.6';