With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Istanbul was formerly Catholic.
text_B: Muruqucha -LRB- Quechua muru blunt ; mutilated ; stained ; pip , grain ; smallpox , qucha lake , hispanicized spelling Morococha -RRB- is a mountain at a small lake of that name in the Andes of Peru which reaches an altitude of approximately 4600 m .. Andes. Andes. Peru. Peru. Quechua. Quechua language. pip. seed. smallpox. smallpox. It is located in the Junin Region , Yauli Province , Marcapomacocha District .. Junin Region. Junin Region. Yauli Province. Yauli Province. Marcapomacocha District. Marcapomacocha District. The lake named Muruqucha lies on the southeastern slope of the mountain at .. Yanaqucha -LRB- `` black lake '' -RRB- is the name of the larger lake southwest of Muruqucha .
not_related.