An obstacle can be to improvement.Logical formLearned from9 sentences. An obstacle can be among allies.Logical formLearned from9 sentences. An obstacle can be to repeating as champions.Logical formLearned from9 sentences. An obstacle can be big.Logical formLearned from9 sentences. Lack of money can be an obstacle.Logical formLearned from9 sentences. Obstacles to getting information may maintain a civil peace.Logical formLearned from9 sentences. Obstacles can be to getting information.Logical formLearned from9 sentences. An obstacle can be to improving relations.Logical formLearned from9 sentences. An obstacle can be an inability.Logical formLearned from9 sentences. An obstacle can be to support.Logical formLearned from9 sentences. Weather can be an obstacle.Logical formLearned from9 sentences. An obstacle can be to a realization.Logical formLearned from9 sentences. Variety can be constituted-of-or-filled-with (obstacle courses).Logical formLearned from9 sentences. Officials may point to a host of obstacles.Logical formLearned from9 sentences. Obstacles can be to a return.Logical formLearned from9 sentences.