i want to download or atleast view all api.ai system entities
the purpose is to understand how they made entity like sys.number and sys.date
the problem i'm facing is that i'm using sys.date entity for my bot whihc works very fine for casual cases like "today" "tomorrow" detected as current date
but fails in special cases like: i want to add one more thing that when user say "aaj", "foran" or "abhi" so it also detect as current date, these are slang words for "today" used in a specific region