Complex sentence: Located in southwestern Washington, D.C., in the United States, Southeastern University was a private, non-profit undergraduate and graduate institution of higher education that lost its accreditation from the Middle States Commission on Higher Education on August 31,2009.
Split into simpler sentences: Located in southwestern Washington, D.C., in the United States, Southeastern University was a private, non-profit undergraduate and graduate institution of higher education. Southeastern lost its accreditation from the Middle States Commission on Higher Education on August 31,2009.