response: Halloween is a celebration observed in a number of countries on 31 October, the eve of the Western Christian feast of All Hallows' Day.
history: Halloween is the best holiday ever!
knowledge: Halloween or Hallowe'en (a contraction of All Hallows' Evening), also known as Allhalloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in a number of countries on 31 October, the eve of the Western Christian feast of All Hallows' Day.