A person may have a lot of obstacles.Logical formLearned from14 sentences. A government may face obstacles.Logical formLearned from14 sentences. Some obstacles can be to an agreement.Logical formLearned from14 sentences. An obstacle can be in ties.Logical formLearned from14 sentences. A country can be an obstacle to efforts.Logical formLearned from14 sentences. Obstacles can be to an implementation.Logical formLearned from14 sentences. Efforts may face obstacles.Logical formLearned from14 sentences. Obstacles can be to ties.Logical formLearned from14 sentences. An obstacle can be to peace-making.Logical formLearned from13 sentences. Obstacles can be from a side.Logical formLearned from13 sentences. An obstacle can be to negotiations.Logical formLearned from13 sentences. An obstacle can be to a normalization of relations.Logical formLearned from13 sentences. An obstacle may be encountered.Logical formLearned from13 sentences. An obstacle can be in a life.Logical formLearned from13 sentences. An obstacle can be to traffic.Logical formLearned from13 sentences.