I'm sure this is mentioned elsewhere...
Ontario is a big place. Maybe six times as big as Britain. Toronto plus the environs is not that small either. Would it be possible to add neighbourhoods to Ontario? I doubt that 'we' as normal users have the rights to do this. Are there 'superusers' that do, or is this all done internally as part of administration?
In the same vein, there is a chow-unavailable cuisine called Hakka that is quite common here. My little browse through the Internet shows a lot more of these in North America than (say) Laotioan, Nepalese or Basque.
When you are in edit of a restaurant record there is a free form box called nighborhoods where you can add (for that record) any you would liked.
Similarily there is a free form box called cusine where you can add lesser know cuisines.
Here's a restaurant record for Antigua where I added the neighbor hood "Central Park" and the cuisine "Guatemalan".
Anyone can edit those fields and don't need any special powers.