A (gas provider) can be in a country.Logical formLearned from11 sentences. Gas may pertain-to a shah.Logical formLearned from11 sentences. Access can be to a (gas field).Logical formLearned from11 sentences. A (gas explosion) may cause a tunnel.Logical formLearned from11 sentences. A (gas explosion) may cause a cave-in.Logical formLearned from11 sentences. A (gas price dispute) can be with a country.Logical formLearned from11 sentences. Gas may be pumped through a country.Logical formLearned from11 sentences. Gas can be competitive.Logical formLearned from11 sentences. Chemicals may be used in (gas attacks).Logical formLearned from11 sentences. Protests can be over control of (gas reserve).Logical formLearned from11 sentences. A pipeline may link a (gas field) to a country.Logical formLearned from11 sentences. Officers may lob gas.Logical formLearned from11 sentences. A (gas explosion) may erupt.Logical formLearned from11 sentences. A (methane gas blast) may tear through a mine.Logical formLearned from11 sentences. A (gas concentration) can be high.Logical formLearned from11 sentences.