A bomb can be at a (gas station).Logical formLearned from13 sentences. An attempt may be repulsed by gas.Logical formLearned from13 sentences. Electricity can be from natural gas.Logical formLearned from13 sentences. Natural gas can be in a world-city.Logical formLearned from13 sentences. Special police may spray gas.Logical formLearned from13 sentences. Gas may be fired into air.Logical formLearned from13 sentences. Effects may pertain-to gas.Logical formLearned from13 sentences. Parts may pertain-to a (gas plant).Logical formLearned from13 sentences. Buses may run on natural gas.Logical formLearned from13 sentences. (Gas fields) can be onshore.Logical formLearned from13 sentences. The industrialized world may roll_back (greenhouse gas emissions) to some levels.Logical formLearned from13 sentences. A (gas oven) may explode in a (coffee shop).Logical formLearned from13 sentences. A (gas attack) can be on subways.Logical formLearned from13 sentences. (Riot police) may fire volleys of gas.Logical formLearned from13 sentences. Rebels may wear (gas masks).Logical formLearned from13 sentences.