Obstacles may disappear.Logical formLearned from16 sentences. Obstacles can be to treatment.Logical formLearned from16 sentences. Obstacles may be placed in a path.Logical formLearned from16 sentences. Obstacles can be to a (rescue plan).Logical formLearned from16 sentences. Nations may overcame obstacles.Logical formLearned from16 sentences. A person can be an obstacle.Logical formLearned from16 sentences. An obstacle can be to acceptance.Logical formLearned from16 sentences. Obstacles may be faced.Logical formLearned from16 sentences. Obstacles may face.Logical formLearned from16 sentences. Obstacles may be based on color.Logical formLearned from16 sentences. A female may overcome obstacles.Logical formLearned from16 sentences. Obstacles may be avoided.Logical formLearned from16 sentences. A male may recognize obstacles.Logical formLearned from16 sentences. A male may have some obstacles.Logical formLearned from16 sentences. An obstacle can be for persons.Logical formLearned from16 sentences.