Crews may wear (gas masks).Logical formLearned from15 sentences. A cylinder can be constituted-of-or-filled-with (cooking gas).Logical formLearned from15 sentences. (Gas transit deliveries) may undergo a shutdown.Logical formLearned from15 sentences. A cut-off can be constituted-of-or-filled-with gas.Logical formLearned from15 sentences. Part may pertain-to a (gas pipeline).Logical formLearned from15 sentences. (Gas deposits) may pertain-to a country.Logical formLearned from15 sentences. Foreign investment can be in a (gas pipeline network).Logical formLearned from15 sentences. A (gas company) can be czech.Logical formLearned from15 sentences. A price may pay for gas.Logical formLearned from15 sentences. A (gas dispute) may pertain-to a world-city.Logical formLearned from15 sentences. A (gas dispute) can be with a world-city.Logical formLearned from15 sentences. A country may steal gas.Logical formLearned from15 sentences. A summit can be on a (gas crisis).Logical formLearned from15 sentences. A (gas supply security) may be took.Logical formLearned from15 sentences. One-fourth may pertain-to gas.Logical formLearned from15 sentences.