With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: In Secret is a film without any actors.
text_B: Chain of custody -LRB- CoC -RRB- , in legal contexts , refers to the chronological documentation or paper trail , showing the papertrail , custody , control , transfer , analysis , and disposition of physical or electronic evidence .. paper trail. wiktionary :paper trail. evidence. evidence. Particularly important in criminal cases , the concept is also applied in civil litigation -- and sometimes more broadly in drug testing of athletes , traceability of food products , and to provide assurances that wood products originate from sustainably managed forests .. traceability. traceability. The term is also sometimes used in the fields of history , art history , and archives as a synonym for provenance -LRB- meaning the chronology of the ownership , custody or location of a historical object , document or group of documents -RRB- , which may be an important factor in determining authenticity .. history. history. art history. History of art. synonym. synonym. provenance. provenance
not_related.