instruction: return me the conference, which have the most number of papers by ' H. V. Jagadish ' .
response: SELECT conference.name FROM author, conference, publication, writes WHERE author.name = 'H. V. Jagadish' AND publication.cid = conference.cid AND writes.aid = author.aid AND writes.pid = publication.pid GROUP BY conference.name ORDER BY COUNT(DISTINCT (publication.title)) DESC LIMIT 1