Database: european_football_2 (difficulty: simple)
Question: Does the Sunderland team have a slow, balanced or fast speed class?
SQL: SELECT DISTINCT t1.buildUpPlaySpeedClass FROM Team_Attributes AS t1 INNER JOIN Team AS t2 ON t1.team_api_id = t2.team_api_id WHERE t2.team_long_name = 'Sunderland'