Complex sentence: In 1981 he became the first chairman of Lagan College, Northern Ireland's first integrated school and when Sinn Féin's Martin McGuinness became education minister he invited him to visit the college.
Split into simpler sentences: In 1981 he became the first chairman of Lagan College, Northern Ireland's first integrated school. When Sinn Féin's Martin McGuinness became education minister he invited him to visit the college.