With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ulysses S. Grant fought in the Siege of Petersburg.
text_B: Lester William Weber -LRB- July 30 , 1948 -- February 23 , 1969 -RRB- was a United States Marine who posthumously received the Medal of Honor for heroism in Vietnam in February 1969 .. Medal of Honor. Medal of Honor. United States Marine. United States Marine. posthumously. posthumous recognition. Vietnam. Vietnam War
not_related.