With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Extreme environments can be caused by Carbon dioxide.
text_B: For the English bowler , see William Charles Smith .. William Charles Smith. Razor Smith. William Crawford Smith -LRB- November 26 , 1837 , Petersburg , Virginia - February 5 , 1899 , Manila , The Philippines -RRB- was an American architect who served in the Confederate States Army during the American Civil War and in the United States Army during the Philippine -- American War .. Manila. Manila. The Philippines. The Philippines. Confederate States Army. Confederate States Army. United States Army. United States Army. American Civil War. American Civil War. He designed many buildings in Nashville , Tennessee , including Kirkland Hall , the first building on the campus of Vanderbilt University , and the The Parthenon in Centennial Park .. Vanderbilt University. Vanderbilt University. The Parthenon. Parthenon ( Nashville ). Centennial Park. Centennial Park ( Nashville )
not_related.