CREATE TABLE tryout (pid NUMBER, cname CLOB, ppos CLOB, decision CLOB)
CREATE TABLE college (cname CLOB, state CLOB, enr NUMBER)
CREATE TABLE player (pid NUMBER, pname CLOB, ycard CLOB, hs NUMBER)

Find the states where have some college students in tryout.
SELECT DISTINCT state FROM college AS T1 JOIN tryout AS T2 ON T1.cname = T2.cname
SELECT DISTINCT "state" FROM "college" "T1" JOIN "tryout" "T2" ON "T1"."cname" = "T2"."cname"