(Oil wells) may pertain-to a country.Logical formLearned from158 sentences. An olive oil can be enough.Logical formLearned from158 sentences. Essential oils may undergo a use.Logical formLearned from158 sentences. Oil may undergo purchases.Logical formLearned from158 sentences. (Crude oil reserve) may pertain-to a country.Logical formLearned from158 sentences. A country may have (oil reserve).Logical formLearned from158 sentences. Oil can be for food.Logical formLearned from157 sentences. Oil can be integrated.Logical formLearned from157 sentences. Demand can be for crude oil.Logical formLearned from157 sentences. An (oil spill) may pertain-to a nation.Logical formLearned from157 sentences. (Heating oil) may rise some cents to some cents.Logical formLearned from157 sentences. A company can be oil.Logical formLearned from157 sentences. Oil can be over heat.Logical formLearned from156 sentences. A pool can be constituted-of-or-filled-with oil.Logical formLearned from156 sentences. (Oil prices) may hold steady.Logical formLearned from156 sentences.