Assertion: ballet's performance | /r/HasProperty | held as double premiere
Facets:
value: on 18 december
type: TEMPORAL
value: with tchaikovsky's last opera
type: OTHER
Source sentences:
text: The first performance of the ballet was held as a double premiere together with Tchaikovsky's last opera, Iolanta, on 18 December [O.S. 6 December] 1892, at the Imperial Mariinsky Theatre in Saint Petersburg, Russia.