Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "@SWPTaff @YourPontypridd @RCTCouncil @Tesco Well done to Kristian and the staff for signing up, good news.

" STOCK: Tesco DATE: 12/09/2018
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 1 and the TextBlob polarity score is 0.7.