Table: athletics_2008_olympics_womens
Columns: rank
heat
name
nationality
time

Question: What nationality is Erin Donohue?
SQL: SELECT "nationality" FROM athletics_2008_olympics_womens WHERE "name" = 'erin donohue'

Question: How many heats did Runners from Guinea-Bissau run, with rank higher than 33?
SQL: SELECT SUM("heat") FROM athletics_2008_olympics_womens WHERE "nationality" = 'guinea-bissau' AND "rank" < 33