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A well-known electronics company will release its flagship product this year along with other products. The company wants to estimate the number of people pre-ordering their products and decides to send a public document form for people to fill in their names, desired product, and some relative information. The document is sent to an S3 bucket for further analysis. The company wants to deduplicate the records as some people most probably entered their data twice. What is the easiest method to perform their desired action?