Complex sentence: The Pluralist Generation, or Plurals, is a name for the group of people born between 1997 and 2012, which means that the plurals are 0-15 years old in the year 2012.
Split into simpler sentences: The Pluralist Generation, or Plurals, is a name for the group of people born between 1997 and 2012. Which means that the plurals are 0-15 in the year 2012.