Apollo-Chado example database
There is an example database with GFF3 source files, a log of the commands used to build the database, database dumps at a few steps of building the database, and an Apollo chado-adaptor.xml config file in the schema SVN.
Getting the sample databases from SVN
The SVN repository that has the sample databases in it is called sample_dbs and can be checked out following the directions on the Subversion page. The repository is quite large (200MB) so it will take a while to download.