A female may sing in some languages.Logical formLearned from22 sentences. A crowd may sing birthday.Logical formLearned from22 sentences. A male may sing on a radio.Logical formLearned from22 sentences. A person may sing a composer.Logical formLearned from22 sentences. A fat lady may be sung.Logical formLearned from22 sentences. A female may sing birthday to a president.Logical formLearned from22 sentences. A man may sing fire.Logical formLearned from22 sentences. A female may sing with a company.Logical formLearned from21 sentences. A musician may sing.Logical formLearned from21 sentences. A person may sing tenor.Logical formLearned from21 sentences. A female may sing a part of a female.Logical formLearned from21 sentences. A choir may sing hymns.Logical formLearned from21 sentences. Performers may sing.Logical formLearned from21 sentences. Some children may sing.Logical formLearned from21 sentences. A person may sing in tune.Logical formLearned from21 sentences.