A concert can be by a choir.Logical formLearned from15 sentences. A choir may pertain-to girls.Logical formLearned from14 sentences. A chorus can be a choir.Logical formLearned from14 sentences. A male may sing in a (church choir).Logical formLearned from14 sentences. A choir can be in a world-city.Logical formLearned from14 sentences. A choir may sing carols.Logical formLearned from14 sentences. A (music director) may pertain-to a choir.Logical formLearned from14 sentences. A (show choir) can be mixed.Logical formLearned from14 sentences. A (concert choir) may pertain-to a school.Logical formLearned from14 sentences. Men may pertain-to a choir.Logical formLearned from14 sentences. A choir may sing songs.Logical formLearned from14 sentences. A person can be part of a choir.Logical formLearned from14 sentences. A person may go to (choir practice).Logical formLearned from14 sentences. A choir can be narrow.Logical formLearned from14 sentences. A (choir class) may pertain-to a person.Logical formLearned from14 sentences.