Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: #Spina #Bifida a #neural #tube #birth #defect where the #nervous #system &amp; #spinal #cord do not fully develop #raredisease #June #awareness
This tweet contains emotions: 
fear