Complex sentence: The Martin Luther King, Jr. National Memorial is a memorial scheduled to be dedicated in Washington, D.C. 's West Potomac Park southwest of the National Mall on August 28,2011, the 48th anniversary of King's "I Have a Dream" speech.
Split into simpler sentences: The Martin Luther King, Jr. National Memorial is located in Washington, D.C. 's West Potomac Park, southwest of the National Mall. The Memorial is scheduled to be dedicated on August 28,2011, the 48th anniversary of Martin Luther King, Jr.'s "I Have a Dream" speech.