Disambiguation evidence for Showa era via surface form

"Shōwa period (pre-1947)"

Triples (2)

Triples where some other subject referred to this entity as "Shōwa period (pre-1947)".

Kizoku-in → historicalEra →
"Shōwa period (pre-1947)"
↳ resolves to Showa era
ⓘ
Teikoku Gikai → historicalEra →
"Shōwa period (pre-1947)"
↳ resolves to Showa era
ⓘ