CREATE TABLE "winning_head_of_the_river_championship_e" (
  "crew" real,
  "open_1st_viii" text,
  "open_2nd_viii" text,
  "open_3rd_viii" text,
  "u16_1st_viii" text,
  "u16_2nd_viii" text,
  "u16_3rd_viii" text,
  "u15_1st_quad" text,
  "u15_2nd_quad" text,
  "u15_3rd_quad" text,
  "u15_4th_quad" text,
  "u15_5th_quad" text,
  "u15_6th_quad" text
);

Question: Which Open 2nd VIII had a U15 6th Quad of BGS and a U16 1st VII of TSS?
SQL: SELECT "open_2nd_viii" FROM "winning_head_of_the_river_championship_e" WHERE "u15_6th_quad"='bgs' AND "u16_1st_viii"='tss';

Question: What U15 3rd Quad has a U15 2nd Quad of ACGS?
SQL: SELECT "u15_3rd_quad" FROM "winning_head_of_the_river_championship_e" WHERE "u15_2nd_quad"='acgs';

Question: Which U15 4th Quad had a U15 3rd Quad of BBC and U15 6th Quad of GT?
SQL: SELECT "u15_4th_quad" FROM "winning_head_of_the_river_championship_e" WHERE "u15_3rd_quad"='bbc' AND "u15_6th_quad"='gt';

Question: Which U15 1st Quad had an Open 3rd VIII of BBC and U16 3rd VIII of BBC?
SQL: SELECT "u15_1st_quad" FROM "winning_head_of_the_river_championship_e" WHERE "open_3rd_viii"='bbc' AND "u16_3rd_viii"='bbc';