With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Phelps used to hold long course world records in the 200 meter freestyle and the 200 meter individual medley.
text_B: Bernhard V , Lord of Lippe -LRB- -- before 1365 -RRB- was a member of the House of Lippe and was Lord of Rheda from 1344 until his death .. House of Lippe. House of Lippe. Rheda. Rheda, Germany
not_related.