Table: dragons_den_series
Columns: series_1
series_2
series_3
series_5
series_9
series_11

Question: What series 1 has a Doug Richards in Series 2?
SQL: SELECT "series_1" FROM dragons_den_series WHERE "series_2" = 'doug richards'

Question: Who in series 1 corresponds with Peter Jones in series 5?
SQL: SELECT "series_1" FROM dragons_den_series WHERE "series_5" = 'peter jones'

Question: Who in series 5 corresponds to Deborah Meaden in series 3?
SQL: SELECT "series_5" FROM dragons_den_series WHERE "series_3" = 'deborah meaden'

Question: Who in series 11 corresponds to Peter Jones in series 1?
SQL: SELECT "series_11" FROM dragons_den_series WHERE "series_1" = 'peter jones'

Question: Who in series 9 corresponds to Peter Jones in series 2?
SQL: SELECT "series_9" FROM dragons_den_series WHERE "series_2" = 'peter jones'