Increases can be in a cost of natural gas.Logical formLearned from11 sentences. A person may need gas.Logical formLearned from11 sentences. A (natural gas output) may pertain-to a country.Logical formLearned from11 sentences. A person may sell gas.Logical formLearned from11 sentences. A century may belong to natural gas.Logical formLearned from11 sentences. A contract can be for gas.Logical formLearned from11 sentences. Gas can be at prices.Logical formLearned from11 sentences. Cars can be at a (gas station).Logical formLearned from11 sentences. Victims can be constituted-of-or-filled-with (mustard gas).Logical formLearned from11 sentences. A price of natural gas may rise.Logical formLearned from11 sentences. Gas can be constituted-of-or-filled-with (hydrogen nuclei).Logical formLearned from11 sentences. (Power plants) may use natural gas.Logical formLearned from11 sentences. (Gas users) can be residential.Logical formLearned from11 sentences. A person can be concerned about (gas prices).Logical formLearned from11 sentences. Rings can be constituted-of-or-filled-with (hydrogen gas).Logical formLearned from11 sentences.