With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Television is where one can find Lumen Pierce.
text_B: Loyal Blaine Aldrich -LRB- November 20 , 1884 -- February 11 , 1965 -RRB- was an American astrophysicist and astronomer of the Smithsonian Institution .. American. United States. astrophysicist. astrophysicist. astronomer. astronomer. Smithsonian Institution. Smithsonian Institution. Upon graduation from the University of Wisconsin in 1907 , Aldrich became a Smithsonian Astrophysical Observatory assistant to Charles Greeley Abbot .. Wisconsin. Wisconsin. University of Wisconsin. University of Wisconsin. Smithsonian Astrophysical Observatory. Smithsonian Astrophysical Observatory. Charles Greeley Abbot. Charles Greeley Abbot. The observatory conducted astrophysical research on solar radiation and the amount of energy from the sun that strikes the outer edge of the earth 's atmosphere .. Abbot became director of the observatory in 1907 and established solar observing stations in the United States , South America , and Africa to carry out research on solar radiation .. United States. United States. Aldrich became director of the observatory from 1942 to 1955 .. Harvard University astronomy department chairman Fred Lawrence Whipple became director of the observatory when Aldrich retired .. Harvard University. Harvard University. Fred Lawrence Whipple. Fred Lawrence Whipple
not_related.