Obstacles can be mountainous.Logical formLearned from6 sentences. An obstacle can be for a development of relations.Logical formLearned from6 sentences. Obstacles may block a settlement.Logical formLearned from6 sentences. A blockade can be an obstacle.Logical formLearned from6 sentences. Persons can be aware of obstacles.Logical formLearned from6 sentences. An obstacle can be to a project.Logical formLearned from6 sentences. Problems can be obstacles.Logical formLearned from6 sentences. Obstacles can be from authorities.Logical formLearned from6 sentences. An obstacle can be to a normalization of ties.Logical formLearned from6 sentences. Ways can be constituted-of-or-filled-with obstacles.Logical formLearned from6 sentences. A condition can be an obstacle.Logical formLearned from6 sentences. Obstacles can be prominent.Logical formLearned from6 sentences. Obstacles may be set by a country.Logical formLearned from6 sentences. Obstacles may hinder a (peace process).Logical formLearned from6 sentences. Obstacles may block a (peace process).Logical formLearned from6 sentences.