Champions can be undefeated.Logical formLearned from137 sentences. A (professional boxer) can be undefeated.Logical formLearned from124 sentences. A female can be undefeated.Logical formLearned from122 sentences. A country can be undefeated.Logical formLearned from119 sentences. A male may remain undefeated.Logical formLearned from113 sentences. A male may go undefeated.Logical formLearned from103 sentences. A prospect can be undefeated.Logical formLearned from102 sentences. A country may remain undefeated.Logical formLearned from101 sentences. Persons may go undefeated.Logical formLearned from100 sentences. A us-state can be undefeated.Logical formLearned from95 sentences. A regular season can be undefeated.Logical formLearned from86 sentences. Women can be undefeated.Logical formLearned from83 sentences. A team may go undefeated.Logical formLearned from82 sentences. A person may go undefeated.Logical formLearned from80 sentences. A fighter can be undefeated.Logical formLearned from77 sentences.