Table: mavericks_game_stats_6
Columns: game
date
team
score
high_points
high_rebounds
high_assists
location_attendance
record

Question: Who had highest assists at game on December 21?
SQL: SELECT COUNT("high_assists") FROM mavericks_game_stats_6 WHERE "date" = 'December 21'

Question: What location did the Mavericks play against Milwaukee?
SQL: SELECT "location_attendance" FROM mavericks_game_stats_6 WHERE "team" = 'Milwaukee'