With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Selene serves as the central character in a film written by Mario.
text_B: Mu Geminorum -LRB- μ Gem , μ Geminorum -RRB- , also named Tejat , is a star in the northern constellation of Gemini .. Gemini. Gemini ( constellation ). constellation. constellation
not_related.