(Oil futures) may be bought.Logical formLearned from273 sentences. (Oil prices) can be weak.Logical formLearned from273 sentences. (Oil companies) can be integrated.Logical formLearned from271 sentences. Some percent can be constituted-of-or-filled-with (oil production).Logical formLearned from271 sentences. (Oil futures) can be attractive to foreign investors.Logical formLearned from270 sentences. Oil may run_out.Logical formLearned from268 sentences. An (oil refinery) may pertain-to a country.Logical formLearned from267 sentences. Oil can be thick.Logical formLearned from267 sentences. Prices can be for (crude oil).Logical formLearned from267 sentences. (Oil supplies) may pertain-to the world.Logical formLearned from266 sentences. A cartel may pertain-to (oil producers).Logical formLearned from266 sentences. A background can be in oil.Logical formLearned from264 sentences. Oil may pertain-to a state.Logical formLearned from263 sentences. An (oil output) may pertain-to a country.Logical formLearned from262 sentences. A rebound can be in (oil prices).Logical formLearned from262 sentences.