With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The United States is the third largest country by population at 324 million people.
text_B: Orrin Erastus Freeman -LRB- 1830 -- 1866 -RRB- was an American professional photographer in China and Japan .. Freeman worked in the ambrotype process .. ambrotype. ambrotype. For a short time , Freeman opened a photography studio in Shanghai in 1859 before leaving China for Japan .. Shanghai. Shanghai. Freeman established a studio in Yokohama in 1860 .. Yokohama. Yokohama. He is considered to have been the first Western professional photographer to establish a permanent residence in Japan .. He taught the elements of photography to Ukai Gyokusen who established the first photographer studio in Edo -LRB- Eishin-do -RRB- in 1861 .. Ukai Gyokusen. Ukai Gyokusen. Edo. Edo. Gyokusen 's camera , equipment and supplies were purchased from Freeman .. His death in 1866 was sudden .. He is buried in Yokohama Foreigner 's Cemetery -LRB- Gaijin Bochi -RRB- .. Yokohama. Yokohama
not_related.