Assertion: celebration | /r/HasProperty | feats of strength
Facets:
Source sentences:
text: The non-commercial holiday's celebration, as depicted on Seinfeld, occurs on December 23 and includes a Festivus dinner, an unadorned aluminum Festivus pole, practices such as the "Airing of Grievances" and "Feats of Strength", and the labeling of easily explainable events as "Festivus miracles.