Table: south_derbyshire_mp
Columns: election
first_member
first_party
second_member
second_party

Question: Which election has a conservative first party, Rowland Smith as first member, and Sir Henry Wilmot, Bt as second member?
SQL: SELECT "election" FROM south_derbyshire_mp WHERE "first_party" = 'conservative' AND "first_member" = 'rowland smith' AND "second_member" = 'sir henry wilmot, bt'

Question: Which of the first parties has second member as  Charles Robert Colvile, and a liberal second party?
SQL: SELECT "first_party" FROM south_derbyshire_mp WHERE "second_member" = 'charles robert colvile' AND "second_party" = 'liberal'

Question: Which election has second member Charles Robert Colvile, a conservative first party, and first member William Mundy?
SQL: SELECT "election" FROM south_derbyshire_mp WHERE "second_member" = 'charles robert colvile' AND "first_party" = 'conservative' AND "first_member" = 'william mundy'

Question: Which of the second parties has second member Charles Robert Colvile, a conservative first party, and first member William Mundy?
SQL: SELECT "second_party" FROM south_derbyshire_mp WHERE "second_member" = 'charles robert colvile' AND "first_party" = 'conservative' AND "first_member" = 'william mundy'

Question: Who is the first member in the 1868 election?
SQL: SELECT "first_member" FROM south_derbyshire_mp WHERE "election" = '1868'