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 coalition of workers at an Amazon warehouse in Moreno Valley, California, east of Los Angeles, announced Friday a push to join the Amazon Labor Union, which mounted the first successful unionization effort at any Amazon warehouse in the United States.
user
moderately positive
assistant