With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joseph Stalin was born on December 28, 1878.
text_B: The Association for Psychological Science -LRB- APS -RRB- , previously the American Psychological Society , is an international non-profit organization whose mission is to promote , protect , and advance the interests of scientifically oriented psychology in research , application , teaching , and the improvement of human welfare .. non-profit organization. non-profit organization. psychology. psychology. To this end , APS publishes several journals , holds an annual meeting , disseminates psychological science research findings to the general public , and works with policymakers to strengthen support for scientific psychology .. psychology. psychology
not_related.