Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "@walmarthelp @Sony I purchased a Bluetooth speaker from Walmart, opened the box and what’s inside is the wrong mode… https://t.co/r7M6nfPURP

" STOCK: Sony DATE: 30/10/2018
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 -0.5.