With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Albert Einstein was born after the discovery of the photoelectric effect.
text_B: Leonard Wood -LRB- 1860 -- 1927 -RRB- was Chief of Staff of the U.S. Army , Military Governor of Cuba and Governor General of the Philippines .. Leonard Wood. Leonard Wood. Leonard Wood may also refer to  :. Leonard Wood. Leonard Wood. Leonard Wood -LRB- Prince Edward Island politician -RRB- -LRB- 1865 -- 1957 -RRB- , farmer , trader and political figure. Leonard Wood. Leonard Wood. Leonard Wood -LRB- racing -RRB- -LRB- born 1934 -RRB- , NASCAR co-owner of Wood Brothers Racing. Leonard Wood. Leonard Wood. Len Wood -LRB- born 1942 -RRB- , Canadian politician. Len Wood. Len Wood. Fort Leonard Wood , Missouri , U.S. military base. Leonard Wood. Leonard Wood
not_related.