What are the last names of individuals who have been contact individuals for an organization?
SELECT DISTINCT t1.individual_last_name FROM individuals AS t1 JOIN organization_contact_individuals AS t2 ON t1.individual_id  =  t2.individual_id
SELECT DISTINCT t1.individual_last_name FROM individuals AS t1 JOIN organization_contact_individuals AS t2 ON t1.individual_id  =  t2.individual_id
[{'individual_last_name': 'Schuster'}, {'individual_last_name': 'Kertzmann'}, {'individual_last_name': 'Jacobs'}, {'individual_last_name': "D'Amore"}, {'individual_last_name': 'Rutherford'}, {'individual_last_name': 'Rau'}, {'individual_last_name': 'Rogahn'}, {'individual_last_name': 'Bradtke'}, {'individual_last_name': 'Dooley'}]