Table: eurovision_sweden
Columns: year_s
television_commentator
dual_television_commentator
radio_commentator
spokesperson

Question: Who was the dual television commentator in 1990?
SQL: SELECT "dual_television_commentator" FROM eurovision_sweden WHERE "year_s" = 1990

Question: Who made the comments for radio broadcast when Jan Gabrielsson made them for television broadcast?
SQL: SELECT "radio_commentator" FROM eurovision_sweden WHERE "television_commentator" = 'Jan Gabrielsson'