Question: How about church names for weddings of people older than 30?
SQL: SELECT T4.name FROM wedding AS T1 JOIN people AS T2 ON T1.male_id   =   T2.people_id JOIN people AS T3 ON T1.female_id   =   T3.people_id JOIN church AS T4 ON T4.church_id   =   T1.church_id WHERE T2.age  >  30 OR T3.age  >  30