An obstacle can be in efforts.Logical formLearned from25 sentences. Obstacles can be fixed.Logical formLearned from25 sentences. Obstacles can be impassable.Logical formLearned from25 sentences. An obstacle can be to a solution.Logical formLearned from25 sentences. A male may know obstacles.Logical formLearned from25 sentences. Obstacles can be terrible.Logical formLearned from25 sentences. An obstacle can be to goals.Logical formLearned from25 sentences. Obstacles can be deadly.Logical formLearned from25 sentences. An obstacle can be to sustainable development.Logical formLearned from25 sentences. An obstacle can be for a female.Logical formLearned from25 sentences. Obstacles can be insurmountable.Logical formLearned from25 sentences. A male may see obstacles to carry_outing an agreement.Logical formLearned from25 sentences. An obstacle can be to a country.Logical formLearned from25 sentences. Settlements can be an obstacle.Logical formLearned from25 sentences. An obstacle can be fresh.Logical formLearned from25 sentences.