(Oil prices) may trade.Logical formLearned from115 sentences. A share may pertain-to (oil revenues).Logical formLearned from115 sentences. Oil may leak.Logical formLearned from115 sentences. (Oil prices) can be in a US-city.Logical formLearned from115 sentences. A country can be a producer of (crude oil).Logical formLearned from115 sentences. Royalties can be from oil.Logical formLearned from114 sentences. A dip can be in (oil prices).Logical formLearned from114 sentences. (Oil fields) may undergo a development.Logical formLearned from114 sentences. (Oil prices) may start.Logical formLearned from114 sentences. A quality may pertain-to oil.Logical formLearned from114 sentences. (Oil projects) can be heavy.Logical formLearned from114 sentences. Sweet crude oil can be for delivery.Logical formLearned from114 sentences. (Oil prices) may head.Logical formLearned from114 sentences. (World oil prices) may drop.Logical formLearned from114 sentences. An (oil output) can be annual.Logical formLearned from113 sentences.