Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @Tesco: Collect 1 EXTRA Clubcard point for every £4 spent with Tesco Pay+ https://t.co/tZIjWxKgnp. Ends 14/1/18|T&amp;Cs apply… " 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.