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Axford became a director at the Max Planck Institute for Aeronomy ( since renamed the Max Planck Institute for Solar System Research ) in 1974 .
 Axford, Max Planck Institute for Aeronomy, Max Planck Institute for Solar System Research
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Axford, Max Planck Institute for Aeronomy, Max Planck Institute for Solar System Research