#anniversary__dayofremembrance  the date on which an event occurred in some previous year
  supertype:  particular_day__day  a day assigned to a particular purpose or observance; "Mother's Day"
  subtype:  birthday  an anniversary of the day on which a person was born
  subtype:  jubilee  a special anniversary
     subtype:  diamond_jubilee__diamondjubilee  an anniversary celebrating the passage of 60 years
     subtype:  silver_jubilee  an anniversary celebrating the passage of 25 years
  subtype:  wedding_anniversary__weddinganniversary  the anniversary of the day on which you were married
     subtype:  silver_wedding_anniversary  the 25th wedding anniversary
     subtype:  golden_wedding_anniversary  the 50th wedding anniversary
     subtype:  diamond_wedding_anniversary__diamondweddinganniversary__diamond_wedding  the 60th wedding anniversary
  subtype:  centennial__centenary  the 100th anniversary
  subtype:  bicentennial__bicentenary  the 200th anniversary
  subtype:  tercentennial__triennial  the 300th anniversary
  subtype:  quatercentennial__quatercentenary  the 400th anniversary
  subtype:  quincentennial__quincentenary  the 500th anniversary
  subtype:  millennium.anniversary  the 1000th anniversary

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