Stock may undergo an exchange.Logical formLearned from163 sentences. Volatility can be in a (stock market).Logical formLearned from163 sentences. Stock may undergo purchases.Logical formLearned from163 sentences. Stocks may be mixed.Logical formLearned from163 sentences. A (stock market index) may pertain-to a world-city.Logical formLearned from163 sentences. An item can be in stock.Logical formLearned from162 sentences. Stocks can be dot-com.Logical formLearned from162 sentences. A stock can be in a company.Logical formLearned from162 sentences. (Stock markets) may post gains.Logical formLearned from162 sentences. Stocks can be enough.Logical formLearned from161 sentences. Stocks may surge some percent.Logical formLearned from161 sentences. (Foodstuff stocks) can be at some percent.Logical formLearned from160 sentences. A stock may collapse.Logical formLearned from160 sentences. A stock can be personal.Logical formLearned from160 sentences. A preferred stock can be perpetual.Logical formLearned from160 sentences.