I wonder if an annotation database exists which contains all known feature across the whole genom hg19 using keywords from [sequence ontology][1] ? 


  [1]: http://www.sequenceontology.org/
If you are interested in variants annotated according to the SO terms, download the [VEP file][1] from the [Ensembl FTP for GRCh37][2] (=hg19).


  [1]: ftp://ftp.ensembl.org/pub/grch37/release-84/variation/VEP/
  [2]: ftp://ftp.ensembl.org/pub/grch37/