(Oil imports) may pertain-to persons.Logical formLearned from167 sentences. An (oil price) can be global.Logical formLearned from166 sentences. Oil may undergo a delivery.Logical formLearned from166 sentences. (Oil exports) can be from a country.Logical formLearned from166 sentences. A head may pertain-to an (oil company).Logical formLearned from165 sentences. Prices can be for crude oil.Logical formLearned from165 sentences. A country may produce oil.Logical formLearned from165 sentences. (Crude oil stockpiles) may pertain-to a country.Logical formLearned from165 sentences. A country can be (oil supplier).Logical formLearned from164 sentences. A country may sell oil.Logical formLearned from164 sentences. A (crude oil) may pertain-to a US-city.Logical formLearned from164 sentences. (Oil firms) may pertain-to a country.Logical formLearned from163 sentences. Some (oil workers) may be kidnapped.Logical formLearned from162 sentences. (Oil prices) can be volatile.Logical formLearned from162 sentences. A drop can be in oil.Logical formLearned from161 sentences.