Question: Please update the dictionary by changing the last name of the second employee from Smith to Smooth or whatever takes your fancy.

d = {"employees":[{"firstName": "John", "lastName": "Doe"},
                {"firstName": "Anna", "lastName": "Smith"},
                {"firstName": "Peter", "lastName": "Jones"}],
"owners":[{"firstName": "Jack", "lastName": "Petter"},
          {"firstName": "Jessy", "lastName": "Petter"}]}

Expected output: 

d = {"employees":[{"firstName": "John", "lastName": "Doe"},
                {"firstName": "Anna", "lastName": "Smooth"},
                {"firstName": "Peter", "lastName": "Jones"}],
"owners":[{"firstName": "Jack", "lastName": "Petter"},
          {"firstName": "Jessy", "lastName": "Petter"}]}

 Hint: Access Smith and assign the new string to it.