Table: roster_stats_4
Columns: player
no_s
height_in_ft
position
years_for_rockets
school_club_team_country

Question: What was the position of the player who played for the Rockets during 1981?
SQL: SELECT "position" FROM roster_stats_4 WHERE "years_for_rockets" = '1981'

Question: What school, club team, or country did the player with a number smaller than 4 come from?
SQL: SELECT "school_club_team_country" FROM roster_stats_4 WHERE "no_s" < 4

Question: What is the number of the player who came from Virginia?
SQL: SELECT "no_s" FROM roster_stats_4 WHERE "school_club_team_country" = 'virginia'