Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Just had my first experience with @AmericanExpress extended warranty coverage, and it wad a positive one. My… https://t.co/aNscuiRoEV

" STOCK: American Express DATE: 18/10/2018
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 0.23863636363636365.