Language properties - eating one's own dog food

Hi everyone,

Our BPs aim to encourage comparability of the data, standardization, re-use of vocabularies, etc.

Considering this I find it quite puzzling - or frankly disturbing - that the values for dct:language are picked from different vocabularies at http://w3c.github.io/dwbp/bp.html:

- dct:language <http://lexvo.org/id/iso639-3/eng>; in example 4
- dct:language <http://id.loc.gov/vocabulary/iso639-1/en> in example 7 (among others)

Antoine