(Windfall oil revenues) may pertain-to years.Logical formLearned from2 sentences. Some demonstrators may donate a windfall to a (protest movement).Logical formLearned from2 sentences. A (windfall oil wealth) may pertain-to a country.Logical formLearned from2 sentences. (Rule changes) may mean a windfall.Logical formLearned from2 sentences. A windfall can be for private companies.Logical formLearned from2 sentences. A levy can be on (windfall oil income).Logical formLearned from2 sentences. A portion may pertain-to (windfall oil revenues).Logical formLearned from2 sentences. A country may pour a portion of (windfall oil revenues).Logical formLearned from2 sentences. A windfall can be for a (hedge fund).Logical formLearned from2 sentences. A (revenue windfall) may fuel corruption.Logical formLearned from2 sentences. A (windfall oil wealth) may pertain-to a nation.Logical formLearned from2 sentences. A (windfall profit) may help an image.Logical formLearned from2 sentences. A windfall can be from (record oil prices).Logical formLearned from2 sentences. (Windfall oil earnings) may boost the economy.Logical formLearned from2 sentences. A windfall can be for a husband.Logical formLearned from2 sentences.