Individual #San_Diego_Bay  a bay of the Pacific in southern California
  instance of:  bay
  part of:  San_Diego  a city of southern California on San Diego Bay near the Mexican border; site of an important naval base
     part of:  California__Golden_State__CA  a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes
        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
  part of:  Pacific_Ocean__Pacific  the largest ocean in the world

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