A choir may pertain-to a weekday.Logical formLearned from20 sentences. Choirs can be hysterical.Logical formLearned from20 sentences. A member may pertain-to a (school choir).Logical formLearned from20 sentences. A drunk can be in a (midnight choir).Logical formLearned from20 sentences. A person can be a member of a choir.Logical formLearned from20 sentences. A host may pertain-to a choir.Logical formLearned from20 sentences. Choirs may pertain-to a country.Logical formLearned from20 sentences. Persons may have a choir.Logical formLearned from20 sentences. Choirs may pertain-to men.Logical formLearned from20 sentences. A choir may perform.Logical formLearned from19 sentences. A choir may have some members.Logical formLearned from19 sentences. A choir may pertain-to a sydney-chamber.Logical formLearned from19 sentences. A choir may pertain-to a vancouver-chamber.Logical formLearned from19 sentences. A person may join a choir.Logical formLearned from19 sentences. A (brass choir) can be melancholy.Logical formLearned from19 sentences.