With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The guitarist Frank Zappa's debut album was released in 1966.
text_B: Stefan Dragutin -LRB- Стефан Драгутин died 12 March 1316 -RRB- was the King of Serbia from 1276 to 1282 and King of Syrmia -LRB- Srem -RRB- from 1282 to 1316 .. King of Syrmia. Realm of Stefan Dragutin. King of Serbia. List of Serbian monarchs. Stefan. stefan ( title ). Syrmia. Kingdom of Syrmia. He ruled Serbia until his abdication in 1282 , when he became ill .. He continued to rule the royal domains of Syrmia as King of Syrmia , and his younger brother succeeded him as ruler of Serbia .. King of Syrmia. Realm of Stefan Dragutin. Syrmia. Kingdom of Syrmia. Later he became a monk and changed his name to Teokist .. In the list of Serbian saints , Stefan Dragutin is venerated on 12 November or 30 October -LRB- Old Style and New Style dates -RRB- .. Stefan. stefan ( title ). list of Serbian saints. list of Serbian saints. Old Style and New Style dates. Adoption of the Gregorian calendar#Adoption in Eastern Europe
not_related.