Table: submarine_data
Columns: date
name
nationality
tonnage_grt
fate

Question: How much tonnage Tonnage (GRT) has a Nationality of united kingdom, and a Date of 27 june 1941?
SQL: SELECT COUNT("tonnage_grt") FROM submarine_data WHERE "nationality" = 'united kingdom' AND "date" = '27 june 1941'

Question: Which Nationality has a Date of 8 may 1942?
SQL: SELECT "nationality" FROM submarine_data WHERE "date" = '8 may 1942'