input: Write a python function to parse a JSON string and return a dictionary with keys 'name', 'age', and 'email'.
  assert parse_json('{"name": "John Doe", "age": 34, "email": "john@example.com"}') == {'name': 'John Doe', 'age': 34, 'email': 'john@example.com'}
  assert parse_json('{"name": "Jane Smith", "age": 28, "email": "jane@example.com"}') == {'name': 'Jane Smith', 'age': 28, 'email': 'jane@example.com'}
  assert parse_json('{"name": "Alice Brown", "age": 45, "email": "alice@example.com"}') == {'name': 'Alice Brown', 'age': 45, 'email': 'alice@example.com'}
output: import json
  
  def parse_json(json_string):
      data = json.loads(json_string)
      return {'name': data['name'], 'age': data['age'], 'email': data['email']}