Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @wfamarketers: “More than 1/2 of clients &amp; agencies believe existing agency models are not fit for purpose." Watch @Nissan CMO Roel de V…

" STOCK: Nissan DATE: 18/10/2018
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 0.15.