Find the name of the most popular party form.
create table party_forms (form_id varchar, PRIMARY KEY (form_id)); create table forms (form_name varchar, form_id varchar, PRIMARY KEY (form_name))
select t1.form_name from forms as t1 join party_forms as t2 on t1.form_id = t2.form_id group by t2.form_id order by count(*) desc limit 1