Table: assembly_election_results
Columns: constituency
conservative
labour
liberal_democrats
plaid_cymru
result

Question: What constituency does the Conservative Darren Millar belong to?
SQL: SELECT "constituency" FROM assembly_election_results WHERE "conservative" = 'darren millar'

Question: In what constituency was the result labour hold and Liberal democrat Elizabeth Newton won?
SQL: SELECT "constituency" FROM assembly_election_results WHERE "result" = 'labour hold' AND "liberal_democrats" = 'elizabeth newton'