Obstacles can be in some areas.Logical formLearned from16 sentences. An obstacle can be to an independent state.Logical formLearned from16 sentences. An obstacle can be to a solution.Logical formLearned from16 sentences. A reluctance can be an obstacle.Logical formLearned from16 sentences. Obstacles can be to an accord.Logical formLearned from16 sentences. Obstacles can be in talks.Logical formLearned from16 sentences. An obstacle can be to economic growth.Logical formLearned from15 sentences. Obstacles can be in bilateral relations.Logical formLearned from15 sentences. Obstacles can be in relations.Logical formLearned from15 sentences. An obstacle can be impassable.Logical formLearned from15 sentences. A combination can be constituted-of-or-filled-with obstacles.Logical formLearned from15 sentences. (Obstacle courses) can be inflatable.Logical formLearned from15 sentences. Obstacles can be to deployment.Logical formLearned from15 sentences. An obstacle can be to security.Logical formLearned from15 sentences. Obstacles can be to efforts.Logical formLearned from15 sentences.