input question: To open a nut.'

OPTIONS:
- Use a spanner to turn the nut of the appropriate size.
- Put a spanner on the nut and turn it anticlockwise.

output answer: Put a spanner on the nut and turn it anticlockwise.

input question: Increase strength of brittle hair.

OPTIONS:
- Add vodka to shampoo.
- Add ice cream to shampoo.

output answer: Add vodka to shampoo.

input question: How to ensure that a key stays in good working order?

OPTIONS:
- When the key begins to show wear, buff it with a cloth to remove the excess metal and clean it with any alcohol
- When the key begins to show wear, buff it with sandpaper to remove excess metal and clean it with ethanol

output answer:
When the key begins to show wear, buff it with sandpaper to remove excess metal and clean it with ethanol