which females had a wedding in 2016?
select t2.name from wedding as t1 join people as t2 on t1.female_id = t2.people_id where t1.year = 2016 and t2.is_male = 'F'
which females in that list are from canada?
select t2.name from wedding as t1 join people as t2 on t1.female_id = t2.people_id where t1.year = 2016 and t2.is_male = 'F' and t2.country = 'Canada'
who are the females in canada?
select name from people where country = "Canada" and is_male = "F"
who got married in 2016?
select t2.name from wedding as t1 join people as t2 on t1.female_id = t2.people_id or t1.male_id = t2.people_id where t1.year = 2016
who in that list is from canada?
select t2.name from wedding as t1 join people as t2 on t1.female_id = t2.people_id or t1.male_id = t2.people_id where t1.year = 2016 and t2.country = "Canada"