context: Cross-domed church (appeared in the 10th century with the adoption of Christianity, the earliest type of church, widespread); Tent temple (from the XVI century., widespread); "Like bells" (from the end of the 15th century, it was widely distributed in the end of the 15th-first half of the 16th centuries): the tier of ringing is located above the main volume of the church; The ship (appeared in the middle of the XVII century., Widely distributed in the Baroque era); Octagon on the four (spread in the Baroque era); The rotunda (individual old Russian samples (the “German deity”), the Baroque era (the Church of the Nativity of the Virgin in Podmoklovo) and classicism (the icon of the icon "Everyone Who Sorrows Joy" on Ordynka) is rare); Hall Temple (individual examples, such as the Peter and Paul Cathedral in St. Petersburg (1712-33).
question: How many tent-style churches of Russia exist in April 2019?
answers.text: widespread