Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Good quality, surprised, bought a couple of em and was happy with my purchase https://t.co/cS3NZHecaj 来自 @amazon

" STOCK: Amazon DATE: 08/09/2018
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 0.5333333333333333.