Table: us_house_2006_elections_2
Columns: district
incumbent
party
first_elected
results

Question: What is District, when Incumbent is "Richard Neal"?
SQL: SELECT "district" FROM us_house_2006_elections_2 WHERE "incumbent" = 'richard neal'

Question: What is the lowest First Elected, when District is "Massachusetts 10"?
SQL: SELECT MIN("first_elected") FROM us_house_2006_elections_2 WHERE "district" = 'massachusetts 10'

Question: What is the average First Elected, when District is "Massachusetts 3"?
SQL: SELECT AVG("first_elected") FROM us_house_2006_elections_2 WHERE "district" = 'massachusetts 3'