Find the first names that are used for professionals or owners but are not used as dog names.
SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
[{'first_name': 'Adelle'}, {'first_name': 'Brady'}, {'first_name': 'Cindy'}, {'first_name': 'Danny'}, {'first_name': 'Domenica'}, {'first_name': 'Emelie'}, {'first_name': 'Ericka'}, {'first_name': 'Gay'}, {'first_name': 'Heather'}, {'first_name': 'Jaclyn'}, {'first_name': 'Jayson'}, {'first_name': 'Johann'}, {'first_name': 'Kade'}, {'first_name': 'Karley'}, {'first_name': 'Lesly'}, {'first_name': 'Lorenz'}, {'first_name': 'Melisa'}, {'first_name': 'Monte'}, {'first_name': 'Nora'}, {'first_name': 'Olaf'}, {'first_name': 'Orlando'}, {'first_name': 'Rachelle'}, {'first_name': 'Rolando'}, {'first_name': 'Ruben'}, {'first_name': 'Sigurd'}, {'first_name': 'Taryn'}, {'first_name': 'Tre'}, {'first_name': 'Velva'}, {'first_name': 'Vernice'}, {'first_name': 'Winfield'}]