Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Special delivery! Thanks @UPS for delivering 150 MT of high-energy biscuits from @USAIDFFP to @WFP in #Uganda. https://t.co/xgFzxOmcCC" STOCK: nan DATE: nan
Sentiment: (Provide sentiment here)
Explanation: The tweet sentiment is related to the stock mentioned, and it's important to interpret the context. The LSTM polarity score is nan and the TextBlob polarity score is nan.