Which colleges did the students who tried out for the position of striker attend?
select t1.cname from college as t1 join tryout as t2 on t1.cname = t2.cname where t2.ppos = 'striker'
What states are those colleges located in?
select t1.state from college as t1 join tryout as t2 on t1.cname = t2.cname where t2.ppos = 'striker'