With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lightning rods sometimes may consist of copper.
text_B: Ernest Denis Hoben -LRB- 3 February 18643 February 1918 -RRB- was a New Zealand rugby union administrator who was the figure most responsible for the founding of the New Zealand Rugby Football Union in 1892 ; he was subsequently elected its first Honorary Secretary .. rugby union. rugby union. New Zealand Rugby Football Union. New Zealand Rugby Union
not_related.