Where can I find a reference of the Cayley database format? I find it confusing.
For example in the demo database of movie info, why do so many values start with "/en"?
Why does the following row have '/film' twice and why is there a dot at the end?
":/en/the_window" "/film/film/starring" ":53570" .
Why does Stephen Fry appear so many times?
The example cayley's database of movies is part of Freebase, so is using the freebase name convention.
The id property follow the rule:
/en - top level namespace for all human readable IDs
In the case of film/film/starring the first film is a common domain, the second one is the object and the third one is the name of the property.
You can read more at the page namespace in freebase wiki
