With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Three videos were released to expand on Prometheus's universe, featuring the film's leading actors in character.
text_B: The South Island Party is the name of two unrelated political parties from New Zealand  :. The NZ South Island Party stood in the 1999 General Election. NZ South Island Party. NZ South Island Party. The South Island Party -LRB- 2008 -RRB- stood in the 2008 General Election
not_related.