Table: election_results_2010_3
Columns: district
incumbent
party
first_elected
result
candidates

Question: What incumbent was first elected in 2009?
SQL: SELECT "incumbent" FROM election_results_2010_3 WHERE "first_elected" = 2009

Question: How many were first elected in California 7?
SQL: SELECT "first_elected" FROM election_results_2010_3 WHERE "district" = 'California 7'

Question: What district did George Miller belong to?
SQL: SELECT "district" FROM election_results_2010_3 WHERE "incumbent" = 'George Miller'