What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.
Text: Amazon workers in Staten Island, New York, voted to unionize on Friday, marking the first successful U.S. organizing effort in the retail giant's history and handing an unexpected win to a nascent group that fueled the union drive.
user
mildly positive
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