Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: ".@IdeaDeals @eBay @Comercio_Center Perth Mint 2.5g gold ingot for sale. https://t.co/YsdN5SGcra #Gold #Promote #Save https://t.co/ZkGkNW1tPg" STOCK: nan DATE: nan
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 nan and the TextBlob polarity score is nan.