A retreat can be in (oil prices).Logical formLearned from86 sentences. Oil may be sold.Logical formLearned from86 sentences. A (palm oil) can be red.Logical formLearned from86 sentences. (Oil prices) may advance.Logical formLearned from86 sentences. An (oil refinery) may pertain-to a world-city.Logical formLearned from86 sentences. An (oil giant) can be troubled.Logical formLearned from86 sentences. Attacks can be on (oil companies).Logical formLearned from86 sentences. A response can be to an (oil spill).Logical formLearned from86 sentences. (Oil prices) may undergo a decline.Logical formLearned from85 sentences. Oil may undergo a nationalization.Logical formLearned from85 sentences. Oil can be yellow.Logical formLearned from85 sentences. Oil can be in a market.Logical formLearned from85 sentences. (Crude oil prices) may pertain-to a country.Logical formLearned from85 sentences. (Oil reserve) can be proved.Logical formLearned from85 sentences. (Oil analyst) can be at a company.Logical formLearned from85 sentences.