The examples on linked.art/model/vocab/required/, 19 of 19 implemented in C#.
object/nightwatch/41
object/nightwatch/42
object/nightwatch/43
person/rembrandt/41
person/rembrandt/42
object/nightwatch/44
object/nightwatch/45
visual/nightwatch/40
object/nightwatch/48
person/rembrandt/44
person/rembrandt/43
object/nightwatch/47
activity/exha/40
provenance/manet_proust/40
text/koot_nightwatch/40
provenance/coffin_promise/40
object/nightwatch/49
object/nightwatch/50