Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @HotMamaNtheCity: Expecto Patronum! Bring magical imaginations to life with #HarryPotter dolls at @Walmart. #ad https://t.co/n4JKDLiXUg…" 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.