With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Prometheus had brief design phases.
text_B: Central Aisle Ridge is a north-south ridge immediately east of The Stage on the north side of lower Renegar Glacier , Scott Coast .. The Stage. The Stage ( Antarctica ). Renegar Glacier. Renegar Glacier. Scott Coast. Scott Coast. The name is derived from the position of the ridge relative to West Aisle Ridge , East Aisle Ridge , and its proximity to The Stage .. The Stage. The Stage ( Antarctica ). West Aisle Ridge. West Aisle Ridge. East Aisle Ridge. East Aisle Ridge. It was named by the New Zealand Geographic Board -LRB- 1994 -RRB- following work by a New Zealand Geological Survey party to the area , 1977 -- 78 .. New Zealand Geographic Board. New Zealand Geographic Board. New Zealand Geological Survey. New Zealand Geological Survey
not_related.