With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pornhub is a pornography video sharing website.
text_B: Pornhub is a pornographic video sharing website and the largest pornography site on the Internet .. video sharing. video sharing. pornographic. Pornography. Pornhub was launched in Montreal , providing professional and amateur photography since 2007 .. Montreal. Montreal. amateur photography. amateur photography. Pornhub also has offices and servers in San Francisco , Houston , New Orleans and London .. San Francisco. San Francisco. Houston. Houston. New Orleans. New Orleans. London. London. In March 2010 , Pornhub was bought by Manwin -LRB- now known as MindGeek -RRB- , which owns numerous other pornographic websites .. MindGeek. MindGeek. pornographic. Pornography
related.