With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: South America contains Colombia.
text_B: Nduka Onwuegbute -LRB- born 1969 -RRB- is a Nigerian British playwright , currently living in the United Kingdom .. Nigerian British. Nigerian British. playwright. playwright. United Kingdom. United Kingdom. He was educated at the University of Ibadan and the University of Jos , both in Nigeria .. University of Ibadan. University of Ibadan. University of Jos. University of Jos
not_related.