With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mirka Federer was born in 1978.
text_B: Longxian Town -LRB- Chinese  : 龙仙镇 -RRB- is the county town of Wengyuan County , one of the counties of Shaoguan city in Guangdong province , China .. Chinese. China. Wengyuan County. Wengyuan County. Shaoguan. Shaoguan. Guangdong. Guangdong. China. China. Longxian Town has been developing over hundreds of years .. During the late Qing dynasty , it had a population of approximately 300 people ; as of January 2014 , its population has increased to over 130,000 people .. Qing dynasty. Qing dynasty. Though considered a small town by Chinese standards , it has its own industrial development , regional fruit , and tourist attractions .. Chinese. China
not_related.