A (gem dealer) can be prosperous.Logical formLearned from4 sentences. A (gem sale) can be added.Logical formLearned from3 sentences. A (gem show) may open.Logical formLearned from3 sentences. (Gem traders) may come from a country.Logical formLearned from3 sentences. A gem may be mined in a country.Logical formLearned from3 sentences. A gem can be constituted-of-or-filled-with culture.Logical formLearned from3 sentences. A (gem mining industry) may undergo a development.Logical formLearned from3 sentences. A (gem mining industry) may pertain-to a country.Logical formLearned from3 sentences. Gems can be on sale.Logical formLearned from3 sentences. Division can be for (gem mining).Logical formLearned from3 sentences. Giant pandas may be cited as a gem of a country.Logical formLearned from3 sentences. A sale may pertain-to precious gems.Logical formLearned from3 sentences. (Gem traders) may be invited for a bidding.Logical formLearned from3 sentences. Gems can be for making gems.Logical formLearned from3 sentences. (Gem stones) can be famous.Logical formLearned from3 sentences.