Individual #Isthmus_of_Panama  the isthmus that connects Central America and South America
  instance of:  isthmus
  part:  Panama__Republic_of_Panama  a republic on the Isthmus of Panama; achieved independence from Colombia in 1903
     part:  Panama_Canal  a ship canal 40 miles long across the Isthmus of Panama built by the United State (1904-1914)
     part:  Panama_City.Panama__panamacity__capital_of_Panama__Panamanian_capital  the capital and largest city of Panama
     part:  Colon__Aspinwall  a port city at the Caribbean entrance to the Panama Canal

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