Question: Who came as a replacement in Sheffield United?
SQL: SELECT "Replaced by" FROM "1-19359427-6" WHERE "Team" = 'Sheffield United';

Question: When was the new manager of the team on 21st position appointed?
SQL: SELECT "Date of appointment" FROM "1-19359427-6" WHERE "Position in table" = '21st';

Question: What was Gary Megson's manner of departure?
SQL: SELECT "Manner of departure" FROM "1-19359427-6" WHERE "Outgoing manager" = 'Gary Megson';

Question: When did the old manager vacate his position in Plymouth Argyle?
SQL: SELECT "Date of vacancy" FROM "1-19359427-6" WHERE "Team" = 'Plymouth Argyle';