A reference can be to ancestors.Logical formLearned from7 sentences. Ancestors may be given.Logical formLearned from7 sentences. Ancestors can be on a side.Logical formLearned from7 sentences. An account may pertain-to ancestors.Logical formLearned from7 sentences. Ancestors may pertain-to a philosopher.Logical formLearned from7 sentences. A town may pertain-to ancestors.Logical formLearned from7 sentences. Ancestors may pertain-to groups.Logical formLearned from7 sentences. An ancestor can be in a continent.Logical formLearned from7 sentences. Records may pertain-to ancestors.Logical formLearned from7 sentences. Ancestors may live in a continent.Logical formLearned from7 sentences. Ancestors can be documented.Logical formLearned from7 sentences. An ancestor may pertain-to a race.Logical formLearned from7 sentences. Ancestors may speak a language.Logical formLearned from7 sentences. Ancestors may pertain-to a node.Logical formLearned from7 sentences. Comparison can be with ancestors.Logical formLearned from7 sentences.