Show me all the ratings given by Sarah Martinez.
select * from rating as t1 join reviewer as t2 on t1.rid = t2.rid where t2.name = "Sarah Martinez"
What movies are those ratings about?
select distinct t1.title from movie as t1 join rating as t2 on t1.mid = t2.mid join reviewer as t3 on t2.rid = t3.rid where t3.name = "Sarah Martinez"
Show me the directors of those movies.
select distinct t2.director from rating as t1 join movie as t2 on t1.mid = t2.mid join reviewer as t3 on t1.rid = t3.rid where t3.name = 'Sarah Martinez'