A (gas reservoir) can be underground.Logical formLearned from15 sentences. A (gas conference) can be international.Logical formLearned from15 sentences. A (gas pipeline) may undergo an operation.Logical formLearned from14 sentences. A (gas blast) may take place.Logical formLearned from14 sentences. A (greenhouse gas) may pertain-to the world.Logical formLearned from14 sentences. A country may cut (gas supplies).Logical formLearned from14 sentences. A (gas crisis) can be serious.Logical formLearned from14 sentences. Thousands of persons may leave without gas.Logical formLearned from14 sentences. A (gas supply) can be to a country.Logical formLearned from14 sentences. (Gas debts) may pertain-to a country.Logical formLearned from14 sentences. An agreement can be on (gas supplies).Logical formLearned from14 sentences. A phase may pertain-to a (gas field).Logical formLearned from14 sentences. A worker can be at a (gas station).Logical formLearned from14 sentences. Natural gas can be to a country.Logical formLearned from14 sentences. A (mustard gas) can be toxic.Logical formLearned from14 sentences.