Obstacles can be for persons.Logical formLearned from18 sentences. Obstacles can be to a deal.Logical formLearned from18 sentences. Companies may face obstacles.Logical formLearned from18 sentences. An obstacle can be to travel.Logical formLearned from18 sentences. An obstacle can be in chief.Logical formLearned from18 sentences. Some obstacles can be to a country.Logical formLearned from18 sentences. An obstacle can be to access.Logical formLearned from18 sentences. Obstacles can be unsurmountable.Logical formLearned from18 sentences. An obstacle can be to plans.Logical formLearned from18 sentences. An obstacle can be in talks.Logical formLearned from18 sentences. An obstacle can be in talks.Logical formLearned from18 sentences. Persons may hit obstacles.Logical formLearned from18 sentences. Obstacles can be to a resumption of (peace talks).Logical formLearned from18 sentences. An obstacle can be in negotiations.Logical formLearned from18 sentences. An obstacle can be to lifting an (oil embargo).Logical formLearned from18 sentences.