A male may overcome an obstacle.Logical formLearned from13 sentences. Obstacles can be round.Logical formLearned from13 sentences. An obstacle can be universal.Logical formLearned from13 sentences. A male may overcome an obstacle.Logical formLearned from13 sentences. An obstacle can be to doing business.Logical formLearned from13 sentences. Obstacles may undergo an elimination.Logical formLearned from13 sentences. Obstacles can be hard.Logical formLearned from13 sentences. Persons may have an obstacle.Logical formLearned from13 sentences. Obstacles may limit a reprogramming of human cells.Logical formLearned from13 sentences. Obstacles can be to a mission.Logical formLearned from13 sentences. An obstacle can be for a person.Logical formLearned from13 sentences. Obstacles can be interesting.Logical formLearned from13 sentences. A series can be constituted-of-or-filled-with (obstacle courses).Logical formLearned from13 sentences. An obstacle can be to a merger.Logical formLearned from13 sentences. Obstacles can be to innovation.Logical formLearned from13 sentences.