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so that means we can bring more pictures , more information about mars back to the people of the earth , in this particular landing opportunity .
 we, the people of the earth, mars, the earth
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 we, the people of the earth, mars, the earth