Categorize the input news's emotional tone into one of three groups.
Options: negative, positive
Text: Amazon.com Inc (NASDAQ:AMZN) said it will acquire iRobot, which makes home cleaning robots like the Roomba, for an all-cash deal valued at US$1.7bn.  The company was founded in 1990, spun out of MIT's Artificial Intelligence Lab, with the Roomba robot vacuum cleaner launched in 2002, which sold over 30mln units in 2020.
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