Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @FoxBusiness: .@Walmart, @Costco seen as top retailers in 2019: Moody's https://t.co/Gm4ettaOjq

" STOCK: Costco DATE: 29/10/2018
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 0.5.