Individual #Pennsylvania__Keystone_State__PA  a Mid-Atlantic state; one of the original 13 colonies
  instance of:  #American_state
  part:  #Erie  #Gettysburg  #Harrisburg  #Chester  #Philadelphia  #Pittsburgh  #Allegheny_River  #Monongahela_River
  location of:  #battle_of_Gettysburg
  part of:  #Mid-Atlantic_states  a region of the eastern United States comprising New York and New Jersey and Pennsylvania and Delaware and Maryland
     part of:  #USA__United_States_of_America__United_States__America__US__U.S.__U.S.A.  North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
        part of:  #North_America  a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama
           part of:  #northern_hemisphere  the hemisphere north of the equator
           part of:  #western_hemisphere__westernhemisphere__occident__New_World  the hemisphere that includes North and South America
           part of:  #the_Americas__America  North and South America

No statement uses or specializes #Pennsylvania; click here to add one.