Categorize the input news's emotional tone into one of three groups.
Options: positive, negative
Text: Amazon.com Inc (NASDAQ:AMZN) has said it will invest more than 1 billion euros ($974.8 million) over the next five years in electric vans, trucks and low-emission package hubs across Europe, accelerating its drive to achieve net-zero carbon. The online retail giant noted that the investment would help its electric van fleet in Europe more than triple from 3,000 vehicles to more than 10,000 by 2025.
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