A man can be a younger brother.Logical formLearned from6 sentences. A male can be a younger brother of singer.Logical formLearned from6 sentences. A younger brother may pertain-to an author.Logical formLearned from6 sentences. A younger brother may pertain-to a writer.Logical formLearned from6 sentences. (Rock units) can be younger.Logical formLearned from6 sentences. A younger brother can be mischievous.Logical formLearned from6 sentences. A (diffusion line) can be younger.Logical formLearned from6 sentences. Mutants can be younger.Logical formLearned from6 sentences. A (team mate) can be younger.Logical formLearned from6 sentences. Violinists can be younger.Logical formLearned from6 sentences. Lambs can be younger.Logical formLearned from6 sentences. A younger brother may undergo a marriage.Logical formLearned from6 sentences. A succession may pertain-to a younger brother.Logical formLearned from6 sentences. A generation. can be younger.Logical formLearned from6 sentences. A female may be named after a younger sister.Logical formLearned from6 sentences.