Disambiguation evidence for Once Upon a Mattress via surface form
"Once Upon a Mattress (1959 Broadway production)"
Triples (1)
Triples where some other subject referred to this entity
as "Once Upon a Mattress (1959 Broadway production)".
Sensitivity
→
firstPerformanceIn
→
"Once Upon a Mattress (1959 Broadway production)"
ⓘ
↳ resolves to Once Upon a Mattress