Analyze the tweet "There will be no #gaming video today. An old friend of mine passed last night, so I'm taking some time to grieve. Thank you #StandUpToCancer" and indicate which emotions from the list (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) are expressed. If no emotions are found, answer with "neutral or no emotion".
sadness