Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "#Sky scenario from @Shell presentation starts at the #UCDavisAtGCAS with a disclaimer: "don't start selling Shell s… https://t.co/kVzi7LqZrc

" STOCK: Shell DATE: 12/09/2018
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 0.0.