A choir may provide music.Logical formLearned from5 sentences. A choir can be known.Logical formLearned from5 sentences. A choir may give a concert.Logical formLearned from5 sentences. Member may pertain-to a (church choir).Logical formLearned from5 sentences. A male may pertain-to a choir.Logical formLearned from5 sentences. A choir may travel to a world-city.Logical formLearned from5 sentences. A male may leave a choir.Logical formLearned from5 sentences. Choirs can be established.Logical formLearned from5 sentences. A choir may pertain-to an ericson-chamber.Logical formLearned from5 sentences. A mixed choir can be unaccompanied.Logical formLearned from5 sentences. A vault may pertain-to a choir.Logical formLearned from5 sentences. A (church choir) may sing.Logical formLearned from5 sentences. A choir may hold a concert.Logical formLearned from5 sentences. A choir may undergo vaultings.Logical formLearned from5 sentences. A (church choir) may sing.Logical formLearned from5 sentences.