Rivals can be in the world.Logical formLearned from12 sentences. A challenge can be by a rival.Logical formLearned from12 sentences. A lack can be constituted-of-or-filled-with rivals.Logical formLearned from12 sentences. An endorsement can be from a rival.Logical formLearned from12 sentences. Attacks can be from rival.Logical formLearned from12 sentences. A rival to a whiteness of lead may appear after a discovery of zinc.Logical formLearned from12 sentences. A rival can be to a whiteness of lead.Logical formLearned from12 sentences. Positions may pertain-to rivals.Logical formLearned from12 sentences. A female may have some rivals.Logical formLearned from12 sentences. Comparison can be to rivals.Logical formLearned from12 sentences. (Merger talks) can be with a rival.Logical formLearned from12 sentences. (Campaign finances) may pertain-to a rival.Logical formLearned from12 sentences. Some rivals can be in a world-city.Logical formLearned from12 sentences. Rivals may have a time.Logical formLearned from12 sentences. A price may pertain-to a rival.Logical formLearned from12 sentences.