Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Congrats to @Boeing, @Dassault3DS, @SiemensPLM, and @ANSYS for being in our top five stories - https://t.co/7z0KJq5Ziq
" STOCK: Boeing DATE: 31/07/2017
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 0.5.