Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @RickRieder: As I explained on @CNBC this morning, and delve into further in my @blackrock blog post: monetary policy restrictiveness, f…

" STOCK: BlackRock DATE: 23/10/2018
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 0.0.