A political-leader may remain an obstacle on a road.Logical formLearned from8 sentences. A country may remove an obstacle to talks.Logical formLearned from8 sentences. (Business nerves) can be an obstacle.Logical formLearned from8 sentences. A world-city can be an obstacle.Logical formLearned from8 sentences. An obstacle can be to a campaign.Logical formLearned from8 sentences. Persons may overcome obstacles.Logical formLearned from8 sentences. An obstacle can be on a side.Logical formLearned from8 sentences. Obstacles can be in_front_of shops.Logical formLearned from8 sentences. An obstacle can be to a normalization of relations.Logical formLearned from8 sentences. A campaign may face obstacles.Logical formLearned from8 sentences. Obstacles can be deliberate.Logical formLearned from8 sentences. An obstacle can be to a holding of elections.Logical formLearned from8 sentences. An obstacle can be to a coalition.Logical formLearned from8 sentences. An obstacle can be to a lifting of sanctions.Logical formLearned from8 sentences. A failure can be an obstacle to lifting an (oil embargo).Logical formLearned from8 sentences.