Task: Assess the emotional content of the tweet and classify 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 best represent the tweeter's mental state.
Tweet: @FoxNews Very thought provoking &amp; leads one to question what really happened.Very sad for all.
This tweet contains emotions: 
sadness