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.com Inc workers at a Staten Island sortation center have been given the greenlight to hold a vote on whether to unionize, according to a labor advocate, in what would be a second potential union election for the retailer in New York.
user
mildly positive
assistant