With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Radiohead released the 2007 album In Rainbows.
text_B: Chromosome 16 is one of the 23 pairs of chromosomes in humans .. People normally have two copies of this chromosome .. chromosome. chromosome. Chromosome 16 spans about 90 million base pairs -LRB- the building material of DNA -RRB- and represents just under 3 % of the total DNA in cells .. cells. cell ( biology ). In February 2010 , a new cause of obesity due to a microdeletion on chromosome 16 was announced .. chromosome. chromosome. It may explain about 1 % of obesity cases .. Research showed that this microdeletion is relatively common in obese people but lacking in most non-obese people .
not_related.