還暦 かんれき土俵 どひょう りであれば
kanrekidohyō irideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 還暦土俵入り

1. If/when a 60th birthday ring-entering ceremony…; If there were a 60th birthday ring-entering ceremony…

Ba Conditional
Sumo