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

Find the states where have some college students in tryout and their decisions are yes.
SELECT DISTINCT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cname = T2.cname WHERE T2.decision = 'yes'
SELECT DISTINCT "T1"."state" FROM "college" "T1" JOIN "tryout" "T2" ON "T1"."cname" = "T2"."cname" AND "T2"."decision" = 'yes'