Question: on what date was tie number 4?
SQL: SELECT "Date" FROM "2-17751851-1" WHERE "Tie no" = '4';

Question: Minehead has what tie number?
SQL: SELECT "Tie no" FROM "2-17751851-1" WHERE "Home team" = 'Minehead';

Question: what is Enfield's tie number?
SQL: SELECT "Tie no" FROM "2-17751851-1" WHERE "Home team" = 'Enfield';