Apartments may use natural gas.Logical formLearned from20 sentences. A (natural gas field) may undergo a development.Logical formLearned from20 sentences. A person may go into a (gas station).Logical formLearned from20 sentences. A (gas tank) can be high-pressure.Logical formLearned from20 sentences. Barriers may slow gas.Logical formLearned from20 sentences. Gas may build_up.Logical formLearned from20 sentences. Gas can be substandard.Logical formLearned from20 sentences. A natural gas can be flammable.Logical formLearned from20 sentences. A (gas stove) can be in a female.Logical formLearned from20 sentences. A (gas station) can be suburban.Logical formLearned from20 sentences. A (gas attack) can be on subways.Logical formLearned from20 sentences. A (gas smell) can be strong.Logical formLearned from20 sentences. A (nerve gas attack) may pertain-to a month.Logical formLearned from20 sentences. A monopoly can be on (gas mask manufacturing).Logical formLearned from20 sentences. An international-political-entity may watch (gas disputes).Logical formLearned from20 sentences.