Efforts may face obstacles.Logical formLearned from33 sentences. An obstacle can be to a male.Logical formLearned from32 sentences. Obstacles can be to economic development.Logical formLearned from32 sentences. A mix can be constituted-of-or-filled-with obstacles.Logical formLearned from32 sentences. Obstacles can be to progress.Logical formLearned from32 sentences. Obstacles can be to work.Logical formLearned from32 sentences. A person may see obstacles.Logical formLearned from32 sentences. A male may overcome obstacles.Logical formLearned from32 sentences. Obstacles can be huge.Logical formLearned from32 sentences. An obstacle can be in a quest.Logical formLearned from32 sentences. An obstacle can be an insistence.Logical formLearned from31 sentences. Obstacles can be on a road.Logical formLearned from31 sentences. An obstacle can be to negotiations.Logical formLearned from31 sentences. Obstacles can be to competition.Logical formLearned from31 sentences. Obstacles can be to change.Logical formLearned from31 sentences.