Individual #Pennsylvania__Keystone_State__PA  a Mid-Atlantic state; one of the original 13 colonies
  instance of:  #American_state
  location of:  #battle_of_Gettysburg
  part of:  #Mid-Atlantic_states
  part:  #Erie  a port city on Lake Erie in northwestern Pennsylvania
  part:  #Gettysburg  a small town in southern Pennsylvania; site of a national cemetery
  part:  #Harrisburg__capital_of_Pennsylvania  capital of Pennsylvania; located in southern part of state
  part:  #Chester  a city of southeastern Pennsylvania on the Delaware river (an industrial suburb of Philadelphia)
     part:  #Commodore_John_Barry_Bridge  a cantilever bridge in Chester, Pennsylvania
  part:  #Philadelphia__City_of_Brotherly_Love  the largest city in Pennsylvania; located in the southeastern part of the state on the Delaware river; site of Independence Hall where the Declaration of Independence and the Constitution were signed; site of the University of Pennsylvania
     part:  #Benjamin_Franklin_Bridge  a suspension bridge across the Delaware River
     part:  #Walt_Whitman_Bridge  a suspension bridge across the Delaware River
  part:  #Pittsburgh  a city in southwestern Pennsylvania at the beginning of the Ohio river; site of Carnegie-Mellon University and the University of Pittsburgh
     part:  #Carnegie-Mellon_University  an engineering university in Pittsburgh
  part:  #Allegheny_River__Allegheny  a river that rises in Pennsylvania and flows north into New York and then back south through Pennsylvania again to join the Monongahela River at Pittsburgh which is the beginning of the Ohio River
  part:  #Monongahela_River__Monongahela  a river that rises in northern West Virginia and flows north into Pennsylvania where it joins the Allegheny River at Pittsburgh to form the Ohio River

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