Sponsor research Two directions. A show to its sponsors: ranks recurring sponsors by ad reads with first and last seen dates. A brand to the shows it sponsors: lists each ad read, which the program groups by show. Run each program with ; has the method reference. When to use - who sponsors a show, how many ad reads, since when, still active - which shows a brand sponsors or advertises on, and how often - sponsors two shows share (sponsors of each, then intersect by entity.id) Pick the entity the user meant Users give names; filters take ids only (ent ..., UC..., 11-character video ids), and a…