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: A group of Amazon workers at a fulfillment center in Moreno Valley, California, seeking to join the independent Amazon Labor Union have withdrawn a petition to hold a union election, mere weeks after launching their campaign, the National Labor Relations Board confirmed.
user
moderately negative
assistant