Crises can be periodic.Logical formLearned from171 sentences. Crises can be repeated.Logical formLearned from165 sentences. Crises may pertain-to a country.Logical formLearned from164 sentences. Response can be to crises.Logical formLearned from160 sentences. A string can be constituted-of-or-filled-with crises.Logical formLearned from143 sentences. Crises may pertain-to the world.Logical formLearned from134 sentences. Crises can be emotional.Logical formLearned from124 sentences. Crises can be unexpected.Logical formLearned from119 sentences. Crises can be in a history.Logical formLearned from116 sentences. Economic crises can be global.Logical formLearned from113 sentences. Crises may undergo a resolution.Logical formLearned from112 sentences. Crises can be around the world.Logical formLearned from109 sentences. (Oil crises) may pertain-to 1970s.Logical formLearned from105 sentences. Responses can be to crises.Logical formLearned from105 sentences. Crises can be in a continent.Logical formLearned from104 sentences.