Table: elimination_chamber_2011
Columns: eliminated
wrestler
entered
eliminated_by
method_of_elimination
time

Question: Who was eliminated a person at 18:48?
SQL: SELECT "eliminated_by" FROM elimination_chamber_2011 WHERE "time" = '18:48'

Question: How many entries are shown for entered at 21:09?
SQL: SELECT COUNT("entered") FROM elimination_chamber_2011 WHERE "time" = '21:09'

Question: Who was eliminated by being pinned after a spear at  22:50?
SQL: SELECT "wrestler" FROM elimination_chamber_2011 WHERE "method_of_elimination" = 'Pinned after a spear' AND "time" = '22:50'

Question: What number was the person eliminated at 22:50?
SQL: SELECT "eliminated" FROM elimination_chamber_2011 WHERE "time" = '22:50'