Question: What were the notes for the time of 6:34.51?
SQL: SELECT "Notes" FROM "2-18662685-6" WHERE "Time" = '6:34.51';

Question: What is the rank for the rowers with the time of 6:24.35?
SQL: SELECT "Rank" FROM "2-18662685-6" WHERE "Time" = '6:24.35';

Question: Which RoweRs RepResented Portugal and had notes of R?
SQL: SELECT "Rowers" FROM "2-18662685-6" WHERE "Notes" = 'R' AND "Country" = 'Portugal';

Question: Which rowers represented the country of Portugal?
SQL: SELECT "Rowers" FROM "2-18662685-6" WHERE "Country" = 'Portugal';