Some stocks can be in an index.Logical formLearned from578 sentences. A (stock market) can be volatile.Logical formLearned from577 sentences. (Stock markets) may plunge.Logical formLearned from574 sentences. Trading can be in a stock.Logical formLearned from568 sentences. A stock may plummet.Logical formLearned from567 sentences. Stocks may last.Logical formLearned from567 sentences. A (common stock) may pertain-to a company.Logical formLearned from566 sentences. A statement can be to a (stock exchange).Logical formLearned from563 sentences. Stocks can be defensive.Logical formLearned from562 sentences. (Stock markets) can be in a continent.Logical formLearned from560 sentences. Stocks can be attractive.Logical formLearned from560 sentences. (Stock markets) may tumble.Logical formLearned from559 sentences. An index may be based on some stocks.Logical formLearned from555 sentences. Stocks may undergo a performance.Logical formLearned from552 sentences. (Stock indexes) may pertain-to a country.Logical formLearned from552 sentences.