Obstacles can be perennial.Logical formLearned from10 sentences. Obstacles can be to getting a story.Logical formLearned from10 sentences. A capture can be an obstacle to progress.Logical formLearned from10 sentences. Groups may face obstacles.Logical formLearned from10 sentences. A country may face obstacles.Logical formLearned from10 sentences. An obstacle can be in (peace talks).Logical formLearned from10 sentences. An obstacle can be to modernization.Logical formLearned from10 sentences. An obstacle can be to national security.Logical formLearned from10 sentences. Talks may face some obstacles.Logical formLearned from10 sentences. Obstacles can be in a way of advancement.Logical formLearned from10 sentences. An obstacle can be to an agreement.Logical formLearned from10 sentences. A person may see an obstacle to travel.Logical formLearned from10 sentences. A camp may include an (obstacle course).Logical formLearned from10 sentences. An administration may face obstacles.Logical formLearned from10 sentences. An obstacle can be to (internet growth).Logical formLearned from10 sentences.