Disambiguation evidence for Old East Slavic via surface form

"Ruthenian (Chancery Slavonic)"

Triples (1)

Triples where some other subject referred to this entity as "Ruthenian (Chancery Slavonic)".

Poland-Lithuania in the early modern period → hasOfficialLanguage →
"Ruthenian (Chancery Slavonic)"
↳ resolves to Old East Slavic
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