Some birds may sing.Logical formLearned from27 sentences. A male may sing a time.Logical formLearned from27 sentences. A brother may sing.Logical formLearned from26 sentences. Songs may be sung by a female.Logical formLearned from26 sentences. A person may sing on an album.Logical formLearned from26 sentences. An opera may be sung in a language.Logical formLearned from26 sentences. Lyrics may be sung in a language.Logical formLearned from26 sentences. A female may sing in church.Logical formLearned from26 sentences. Music may be sung.Logical formLearned from26 sentences. A person may sing to a deity.Logical formLearned from26 sentences. A person may sing a life.Logical formLearned from26 sentences. Persons may sing that something-is-the-case.Logical formLearned from26 sentences. Someone may sing a song.Logical formLearned from26 sentences. A person may sing soprano.Logical formLearned from26 sentences. Persons may sing in a sunshine.Logical formLearned from26 sentences.