We don't need the IO monad there, just added a default date for
Duckling to make the parser.

One issue is that it creates new list/docs/board/graph nodes.

Database.PostgreSQL.Simple.Time.Printer.year:  years BCE not supportedCallStack (from HasCallStack):  error, called at src/Database/PostgreSQL/Simple/Time/Internal/Printer.hs:83:23 in postgresql-simple-0.6.4-JK0smXwdTUMDl7m3Ne57PV:Database.PostgreSQL.Simple.Time.Internal.Printer