Task: Question Generation
Input (English): Bill of sale -- A bill of sale is a document that transfers ownership of goods from one person to another. It is used in situations where the former owner retains possession of the goods. Bills of sale may be used in a wide variety of transactions: people can sell their goods, exchange them, give them as gifts or mortgage them to get a loan. They can only be used:
Output (English): is a bill of sale a purchase agreement