44000
East goes through the Grand Canyon , South America or Niagara Falls , across the Atlantic Ocean , into Europe and either into Asia or Australia .
 Grand Canyon, South America, Niagara Falls, Atlantic Ocean, Europe, Asia, Australia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Grand Canyon, South America, Niagara Falls, Atlantic Ocean, Europe, Asia, Australia