Table: rowing_2008_men_lightweight_4
Columns: rank
rowers
country
time
notes

Question: What were the notes for the time of 6:34.51?
SQL: SELECT "notes" FROM rowing_2008_men_lightweight_4 WHERE "time" = '6:34.51'

Question: What is the rank for the rowers with the time of 6:24.35?
SQL: SELECT "rank" FROM rowing_2008_men_lightweight_4 WHERE "time" = '6:24.35'

Question: Which rowers represented portugal and had notes of r?
SQL: SELECT "rowers" FROM rowing_2008_men_lightweight_4 WHERE "notes" = 'r' AND "country" = 'portugal'

Question: Which rowers represented the country of portugal?
SQL: SELECT "rowers" FROM rowing_2008_men_lightweight_4 WHERE "country" = 'portugal'