An obstacle can be perennial.Logical formLearned from11 sentences. Obstacles may stand in a path.Logical formLearned from11 sentences. A succession can be constituted-of-or-filled-with obstacles.Logical formLearned from11 sentences. Obstacles can be for cooperation.Logical formLearned from11 sentences. An obstacle can be for cooperation.Logical formLearned from11 sentences. Obstacles can be to performance.Logical formLearned from11 sentences. Obstacles can be to (health care).Logical formLearned from11 sentences. Obstacles can be systematic.Logical formLearned from11 sentences. Children may overcome obstacles.Logical formLearned from11 sentences. An obstacle can be positive.Logical formLearned from11 sentences. Obstacles can be long-term.Logical formLearned from11 sentences. Obstacles can be in talks.Logical formLearned from11 sentences. An obstacle can be to a transfer.Logical formLearned from11 sentences. An obstacle can be for a recovery.Logical formLearned from11 sentences. Hundreds can be constituted-of-or-filled-with obstacles.Logical formLearned from11 sentences.