Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @Sony: Today, we’re proud to announce that we’ve joined @ClimateGroup and @CDP’s #RE100 initiative. We’re committed to using 100% renewa…

" STOCK: Sony DATE: 10/09/2018
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 0.8.