A country may grapple with an obstacle.Logical formLearned from19 sentences. Obstacles can be in efforts.Logical formLearned from19 sentences. An obstacle can be to a (love affair).Logical formLearned from19 sentences. An obstacle can be to justice.Logical formLearned from19 sentences. An obstacle can be to some attempts.Logical formLearned from19 sentences. Obstacles can be defensive.Logical formLearned from19 sentences. An action may remove an obstacle to improving relations.Logical formLearned from19 sentences. An obstacle can be to learning.Logical formLearned from18 sentences. An obstacle can be to social development.Logical formLearned from18 sentences. An obstacle can be on a road.Logical formLearned from18 sentences. Obstacles can be on a path.Logical formLearned from18 sentences. Obstacles can be to (market access).Logical formLearned from18 sentences. Persons may remove obstacles.Logical formLearned from18 sentences. A sign may pertain-to obstacles.Logical formLearned from18 sentences. An obstacle can be to participation.Logical formLearned from18 sentences.