With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Titanium was written in part by a composing software.
text_B: Craig Michael Williamson -LRB- born 1949 , Johannesburg -RRB- , is a former South African Police major , who was exposed as a spy in 1980 , and was involved in a series of state-sponsored overseas bombings , burglaries , kidnappings , assassinations and propaganda during the apartheid era .. South African Police. South African Police. apartheid era. History of South Africa in the apartheid era
not_related.