Passage: The club was promoted back into the First Division in 1962 and won it in 1964, for the first time in 17 years. In 1965, the club won its first FA Cup. In 1966, the club won the First Division but lost to Borussia Dortmund in the European Cup Winners' Cup final. Liverpool won both the League and the UEFA Cup during the 1972–73 season, and the FA Cup again a year later. Shankly retired soon afterwards and was replaced by his assistant, Bob Paisley. In 1976, Paisley's second season as manager, the club won another League and UEFA Cup double. The following season, the club retained the League title and won the European Cup for the first time, but it lost in the 1977 FA Cup Final. Liverpool retained the European Cup in 1978 and regained the First Division title in 1979. During Paisley's nine seasons as manager Liverpool won 20 trophies, including three European Cups, a UEFA Cup, six League titles and three consecutive League Cups; the only domestic trophy he did not win was the FA Cup.Paisley retired in 1983 and was replaced by his assistant, Joe Fagan. Liverpool won the League, League Cup and European Cup in Fagan's first season, becoming the first English side to win three trophies in a season. Liverpool reached the European Cup final again in 1985, against Juventus at the Heysel Stadium. Before kick-off, Liverpool fans breached a fence which separated the two groups of supporters, and charged the Juventus fans. The resulting weight of people caused a retaining wall to collapse, killing 39 fans, mostly Italians. The incident became known as the Heysel Stadium disaster. The match was played in spite of protests by both managers, and Liverpool lost 1–0 to Juventus. As a result of the tragedy, English clubs were banned from participating in European competition for five years; Liverpool received a ten-year ban, which was later reduced to six years. Fourteen Liverpool fans received convictions for involuntary manslaughter.

Question: How many Liverpool fans were convicted of manslaughter?
Fourteen