An obstacle can be to a quest.Logical formLearned from13 sentences. Obstacles may be addrest.Logical formLearned from13 sentences. An obstacle can be to faith.Logical formLearned from13 sentences. Obstacles can be to collaboration.Logical formLearned from13 sentences. (State law) may stand as an obstacle to an accomplishment of purposes of a legislature.Logical formLearned from13 sentences. An obstacle can be a need.Logical formLearned from13 sentences. An obstacle can be clear.Logical formLearned from13 sentences. An obstacle can be for students.Logical formLearned from13 sentences. A way can be around obstacles.Logical formLearned from13 sentences. Obstacles can be to use.Logical formLearned from13 sentences. Obstacles can be to collaboration.Logical formLearned from13 sentences. Obstacles can be submerged.Logical formLearned from13 sentences. A (peace deal) may face obstacles.Logical formLearned from13 sentences. A male can be an obstacle to a ratification of a treaty.Logical formLearned from13 sentences. Obstacles can be to developping iraqi police.Logical formLearned from13 sentences.