#twelvemonth__yr  a period of time containing 365 (or 366) days; "she is 4 years old"
  supertype:  #time_period__period__period_of_time  an amount of time; "a time period of 30 years"; "hastened the period of his recovery"
  subtype:  #church_year  #Holy_Year  #New_Year  #common_year  #leap_year  #off_year  #off_year.twelvemonth  #calendar_year  #fiscal_year  #year_of_grace  #Y2K
  part of:  #decade__decennary__decennium  a period of 10 years
     part of:  #century  100 years
        part of:  #millennium  a span of 1000 years

No statement uses or specializes #twelvemonth; click here to add one.