Complex sentence: He directed the Roper Center for Public Opinion Research at the University of Connecticut; the Center's mission is to collect and preserve the reports and the original raw computerized data (on IBM cards and tapes) of polls and surveys since the 1930s.
Split into simpler sentences: He directed the Roper Center for Public Opinion Research at the University of Connecticut. The mission was to collect and preserve the reports and the original raw computerized data (on IBM cards and tapes) of polls and surveys since the 1930s.