With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marcus Allen's younger brother is a former professional quarterback for the Baltimore Ravens.
text_B: Piz Lunghin -LRB- 2,780 m -RRB- is a mountain in the Swiss canton of Graubunden , located in the Albula range , overlooking the Maloja Pass .. Graubunden. Graubunden. Swiss. Swiss. Albula range. Albula range. Maloja Pass. Maloja Pass. It can be considered as the `` roof of Europe '' as the water running off the mountain can head towards the Atlantic , Mediterranean or Black Sea .. Atlantic. Atlantic Ocean. Mediterranean. Mediterranean Sea. Black Sea. Black Sea
not_related.