Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "@InvestigateRU @ChuckGrassley @facebook I'd like to know what Grassley's doing about it, especially since what we s… https://t.co/4ac1pt7dsG
" STOCK: Facebook DATE: 31/10/2017
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 0.0.