A singer may sing a national anthem.Logical formLearned from38 sentences. A popularity may pertain-to a singer.Logical formLearned from38 sentences. A singer can be to a male.Logical formLearned from38 sentences. A singer may croon.Logical formLearned from38 sentences. A singer can be on tour.Logical formLearned from38 sentences. A relationship may pertain-to a singer.Logical formLearned from38 sentences. A guy may pertain-to a singer.Logical formLearned from38 sentences. A kind may pertain-to a singer.Logical formLearned from38 sentences. Affairs may pertain-to a singer.Logical formLearned from38 sentences. Funds may pertain-to a singer.Logical formLearned from38 sentences. A singer can be prolific.Logical formLearned from38 sentences. A singer may appear.Logical formLearned from38 sentences. A singer may state that something-is-the-case.Logical formLearned from37 sentences. Some (studio album) can be by a singer.Logical formLearned from37 sentences. A singer can be deceased.Logical formLearned from37 sentences.