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A San Francisco-based tech startup is building a cross-platform mobile app that can notify the user of upcoming astronomical events. Your mobile app authenticates with the Identity Provider (IdP) using the provider's SDK and Amazon Cognito. Once the end-user is authenticated with the IdP, the OAuth or OpenID Connect token returned from the IdP is passed by your app to Amazon Cognito. Which of the following is returned for the user to provide a set of temporary, limited-privilege AWS credentials?