An obstacle can be to adoption.Logical formLearned from13 sentences. An obstacle can be to an economic growth.Logical formLearned from13 sentences. An obstacle can be to implementation.Logical formLearned from13 sentences. Obstacles can be to compliance.Logical formLearned from13 sentences. Obstacles can be in negotiations.Logical formLearned from13 sentences. Sidewalks can be (obstacle courses).Logical formLearned from13 sentences. A list may pertain-to obstacles.Logical formLearned from13 sentences. A person may see some obstacles.Logical formLearned from13 sentences. A male may overcame obstacles.Logical formLearned from13 sentences. Obstacles can be in a (century world).Logical formLearned from13 sentences. Obstacles can be theoretical.Logical formLearned from13 sentences. A love can be for some (face obstacles).Logical formLearned from13 sentences. An obstacle can be tangible.Logical formLearned from13 sentences. Obstacles may vanish.Logical formLearned from13 sentences. Obstacles can be in place.Logical formLearned from13 sentences.