A percent may pertain-to proven (oil reserve).Logical formLearned from236 sentences. Worries can be about (oil prices).Logical formLearned from236 sentences. A (crude oil) may pertain-to a country.Logical formLearned from235 sentences. (Oil firms) can be international.Logical formLearned from235 sentences. Exploration can be for oil.Logical formLearned from234 sentences. A drop can be in oil.Logical formLearned from234 sentences. A rise can be in oil.Logical formLearned from234 sentences. (Oil fields) can be rich.Logical formLearned from233 sentences. An (oil hub) may pertain-to a country.Logical formLearned from233 sentences. An addiction can be to foreign oil.Logical formLearned from233 sentences. A percent may pertain-to a crude oil.Logical formLearned from233 sentences. (Oil prices) may increase.Logical formLearned from232 sentences. (Heating oil) may rise some cent to some cents.Logical formLearned from232 sentences. A center may pertain-to an (oil industry).Logical formLearned from232 sentences. Oil can be increased.Logical formLearned from230 sentences.