Billy Graham has conducted over 41 evangelistic crusades since 1948. He began this form of ministry in 1947 and continued until recently. He would rent a large venue, such as a stadium, park, or street. He had a group of up to 5,000 people to sing in a choir and then preached the gospel and invited people to come forward. These people, called inquirers, were then given the opportunity to speak one-on-one with a counselor who clarified any questions the inquirer may have had and would pray with that person. The inquirers were often given some resources such as a Gospel of John or Bible study booklet. In Moscow in 1992, one-fourth of the 155,000 in his audience came forward upon his request.