Table: draft_picks_6
Columns: round
player
position
nationality
college_junior_club_team_league

Question: Which Nationality has a Round smaller than 3?
SQL: SELECT "nationality" FROM draft_picks_6 WHERE "round" < 3

Question: Which Position has a Round larger than 4, and a Player of patrick johnson?
SQL: SELECT "position" FROM draft_picks_6 WHERE "round" > 4 AND "player" = 'patrick johnson'

Question: Which Nationality has a Round of 4?
SQL: SELECT "nationality" FROM draft_picks_6 WHERE "round" = 4

Question: Which Player has a Round smaller than 4, and a College/junior/club team (league) of usa u-18?
SQL: SELECT "player" FROM draft_picks_6 WHERE "round" < 4 AND "college_junior_club_team_league" = 'usa u-18'