(Gas prices) may rise some percent.Logical formLearned from11 sentences. Gas may drop some cents.Logical formLearned from11 sentences. Gas can be evaporated.Logical formLearned from11 sentences. An ecological balance can be for natural gas.Logical formLearned from11 sentences. A (life cycle) can be in favour of natural gas.Logical formLearned from11 sentences. Oil may pertain-to a natural gas.Logical formLearned from11 sentences. Advantages can be for natural gas.Logical formLearned from11 sentences. (Gas supplies) can be tight.Logical formLearned from11 sentences. A (built-in gas) may be located on a wheel.Logical formLearned from11 sentences. Consumers may buy (gas cards).Logical formLearned from11 sentences. A truck may carry natural gas.Logical formLearned from11 sentences. Persons can be justified in dropping some tons of (nerve gas).Logical formLearned from11 sentences. A (gas station) can be vacant.Logical formLearned from11 sentences. Gas may undergo an importation.Logical formLearned from11 sentences. A source can be constituted-of-or-filled-with (greenhouse gas).Logical formLearned from11 sentences.