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Reading JSON files
Summary and Review
13. Exercise 2


Nice job! Now we need to find the school's top students.


As you saw in the previous exercise, the grades are stored in a field named marks in the following format:

  'students': [
      'marks': {'Art': 'B', 'Science': 'C', ...},
      'name': 'Hartman Schwartz', 

Read the liberty_school.json file into memory and save it as school_data. Print the names of students who have As in Mathematics and Science.