Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @salemkeizer: 2/ Thank you Salem @Costco for donating 700 backpacks and 1,700 hot dogs for Swegle Elementary's Open House for fam… 
" STOCK: Costco DATE: 01/09/2017
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 0.18333333333333326.