Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: Class is canceled due to a funeral. Not sure if it's appropriate to be happy or sad.. #happy
This tweet contains emotions: 
joy, sadness