Complex sentence: On Friday, Sept.25, the pope will address the United Nations General Assembly at the U.N. building, then take part in an ecumenical service at the National September 11 Memorial & Museum at the former site of the World Trade Center.
Split into simpler sentences: On Friday, Sept.25, the pope will address the United Nations General Assembly. Following the address to the U.N., he will participate in an ecumenical service at the National September 11 Memorial & Museum at the former site of the World Trade Center.