With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Albert Einstein discovered the emission of electrons or other free carriers when light is shone onto a material.
text_B: Henry Eckford may refer to  :. People. Henry Eckford -LRB- horticulturist -RRB- -LRB- 1823-1905 -RRB- , British horticulturist. Henry Eckford -LRB- shipbuilder -RRB- -LRB- 1775-1832 -RRB- , Scottish-born American shipbuilder and naval architect. Ships. PS Henry Eckford , American commercial steamship in service from 1824 to 1841 , the first steamship to be powered by a compound engine. , a fleet replenishment oiler of the United States Navy launched in 1989 but never completed and sold for scrapping in 2011. Eckford , Henry
not_related.