Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Check out Pottery Barn Kids PBK 4 Piece Witch Halloween Costume Hat Cape Shirt Skirt Sz 3T  https://t.co/MC6p463pKF via @eBay" 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.