Who was in Human Resources & Operations when David Hornsby was in Academic & University Affairs?
CREATE TABLE "executive_commissioners" (
  "year" text,
  "human_resources_operations" text,
  "local_affairs" text,
  "academic_university_affairs" text,
  "external_affairs" text
);
SELECT "human_resources_operations" FROM "executive_commissioners" WHERE "academic_university_affairs"='david hornsby';