With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marshall McLuhan was a Professor of English at several universities.
text_B: Henry Raymond Ringness -LRB- 1912 -- 1942 -RRB- , was a United States Navy officer who received the Navy Cross for his actions during World War II .. United States Navy. United States Navy. World War II. World War II. Navy Cross. Navy Cross ( United States ). officer. Commissioned officer
not_related.