An obstacle can be opposition.Logical formLearned from8 sentences. Obstacles can be to entry.Logical formLearned from8 sentences. Obstacles can be to freedom.Logical formLearned from8 sentences. A country can be an obstacle to peace.Logical formLearned from8 sentences. An obstacle can be hidden.Logical formLearned from8 sentences. A (state law) may stand as an obstacle to an accomplishment of purposes of a legislature.Logical formLearned from8 sentences. Communication can be an obstacle.Logical formLearned from8 sentences. Obstacles may deal with politics.Logical formLearned from8 sentences. Obstacles can be to (poverty reduction).Logical formLearned from8 sentences. An obstacle may be encountered.Logical formLearned from8 sentences. An obstacle can be to a choice.Logical formLearned from8 sentences. Debt can be an obstacle.Logical formLearned from8 sentences. Obstacles can be in place.Logical formLearned from8 sentences. Obstacles may be presented.Logical formLearned from8 sentences. Obstacles can be easy.Logical formLearned from8 sentences.