Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @spg: Introducing the new SPG @AmericanExpress Luxury Card. New Card Members can earn 100K points after they make $5,000 in eligible pur…

" STOCK: American Express DATE: 27/10/2018
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 0.13636363636363635.