A knock can be undefeated.Logical formLearned from13 sentences. A world-city may remain undefeated.Logical formLearned from13 sentences. A southpaw can be undefeated.Logical formLearned from12 sentences. A club may go undefeated.Logical formLearned from12 sentences. Matches can be undefeated.Logical formLearned from12 sentences. A (soccer team) can be undefeated.Logical formLearned from12 sentences. A yesterday can be undefeated.Logical formLearned from12 sentences. Teams may go undefeated.Logical formLearned from12 sentences. A middleweight can be undefeated.Logical formLearned from12 sentences. Horses can be undefeated.Logical formLearned from12 sentences. A (boxing champion) can be undefeated.Logical formLearned from12 sentences. A welterweight can be undefeated.Logical formLearned from12 sentences. A division can be undefeated.Logical formLearned from12 sentences. Buckeyes can be undefeated.Logical formLearned from12 sentences. Some games can be undefeated.Logical formLearned from12 sentences.