Complex sentence: In 1937, the citizens of St. Paul, petitioned Congress to construct a National Cemetery in the area, and in 1939 the new plot was dedicated, and the remains from the original post cemetery were transferred to it.
Split into simpler sentences: In 1937, the citizens of St. Paul, petitioned Congress to construct a National Cemetery in the area. Two years later, the new plot was dedicated, and the burials from the original post cemetery were moved to it.