Table: brecht_wallis_fights
Columns: date
result
opponent
location
method

Question: What is the location for the win against Johan Mparmpagiannis?
SQL: SELECT "location" FROM brecht_wallis_fights WHERE "result" = 'win' AND "opponent" = 'johan mparmpagiannis'

Question: What is the method against Björn Bregy?
SQL: SELECT "method" FROM brecht_wallis_fights WHERE "opponent" = 'björn bregy'

Question: What is the method against Paula Mataele?
SQL: SELECT "method" FROM brecht_wallis_fights WHERE "opponent" = 'paula mataele'

Question: What is the date of the match in Vilnius, Lithuania?
SQL: SELECT "date" FROM brecht_wallis_fights WHERE "location" = 'vilnius, lithuania'

Question: What is the result against Errol Zimmerman on 2007-04-07?
SQL: SELECT "result" FROM brecht_wallis_fights WHERE "opponent" = 'errol zimmerman' AND "date" = '2007-04-07'

Question: What is the location of the match against Martinis Knyzelis?
SQL: SELECT "location" FROM brecht_wallis_fights WHERE "opponent" = 'martinis knyzelis'