Table: chiefs_draft
Columns: year
pick
player_name
college
position

Question: Which College has a Year smaller than 1962, and a Position of rb?
SQL: SELECT "college" FROM chiefs_draft WHERE "year" < 1962 AND "position" = 'rb'

Question: Which Year has a College of nebraska, and a Pick of 2?
SQL: SELECT "year" FROM chiefs_draft WHERE "college" = 'nebraska' AND "pick" = '2'

Question: Which Pick has a Year larger than 1983, and a Player name of brian jozwiak?
SQL: SELECT "pick" FROM chiefs_draft WHERE "year" > 1983 AND "player_name" = 'brian jozwiak'

Question: Which lowest year has a Position of rb, and a College of louisiana state?
SQL: SELECT MIN("year") FROM chiefs_draft WHERE "position" = 'rb' AND "college" = 'louisiana state'

Question: How many years have a Player name of ronnie bull?
SQL: SELECT SUM("year") FROM chiefs_draft WHERE "player_name" = 'ronnie bull'