(Gas resources) may undergo a development.Logical formLearned from15 sentences. An increase can be in a (gas tax).Logical formLearned from15 sentences. Gas can be in air.Logical formLearned from15 sentences. (Gas hydrate) may undergo a distribution.Logical formLearned from15 sentences. (Gas prices) may stabilize.Logical formLearned from15 sentences. (Gas emissions) can be volcanic.Logical formLearned from15 sentences. A country may use (mustard gas).Logical formLearned from15 sentences. (Greenhouse gas emissions) can be dangerous.Logical formLearned from15 sentences. A producer can be constituted-of-or-filled-with gas.Logical formLearned from15 sentences. Respect can be to gas.Logical formLearned from15 sentences. Respect can be to gas.Logical formLearned from15 sentences. Shipper may deliver gas.Logical formLearned from15 sentences. Gas may be emitted.Logical formLearned from15 sentences. A (gas supply) can be reliable.Logical formLearned from15 sentences. Gas may pertain-to a galaxy.Logical formLearned from15 sentences.