Obstacles can be to a deal.Logical formLearned from23 sentences. Obstacles can be to foreign investment.Logical formLearned from23 sentences. An obstacle can be for peace.Logical formLearned from23 sentences. A country may create obstacles.Logical formLearned from22 sentences. An obstacle can be for a country.Logical formLearned from22 sentences. An obstacle can be to communication.Logical formLearned from22 sentences. An obstacle can be to economic development.Logical formLearned from22 sentences. An obstacle can be to treatment.Logical formLearned from22 sentences. An obstacle can be perceived.Logical formLearned from22 sentences. Age can be an obstacle.Logical formLearned from22 sentences. Obstacles may arise.Logical formLearned from22 sentences. An obstacle may pertain-to a US-president.Logical formLearned from22 sentences. A person may see an obstacle.Logical formLearned from22 sentences. Some obstacles can be in a life.Logical formLearned from22 sentences. Some obstacles may lie.Logical formLearned from22 sentences.