With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: PageRank was named after a Croat.
text_B: ORTC may refer to  :. Object Real-time Communications , an object-centric application programming interface for WebRTC. Object Real-time Communications. Object Real-time Communications. Ohio River Trail Council , US. Ohio River Trail Council. Ohio River Trail Council. Office de Radio et Television des Comores , in the List of radio stations in Africa. Office de Radio et Television des Comores. Office de Radio et Television des Comores. List of radio stations in Africa. List of radio stations in Africa
not_related.