Which behavior category does user number 5902120154267990000 belong to?
behavior category refers to category; number refers to app_id; app_id = 5902120154267990000;
SELECT T1.category FROM label_categories AS T1 INNER JOIN app_labels AS T2 ON T1.label_id = T2.label_id WHERE T2.app_id = 5902120154267990000