What is the type and id of the organization that has the most research staff?
SELECT T1.organisation_type ,  T1.organisation_id FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1
SELECT T1.organisation_type ,  T1.organisation_id FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1
[{'organisation_type': 'SPON', 'organisation_id': 5}]