With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Vanilla Sky stars a United States actor.
text_B: Libertas Academica is an open access academic journal publisher specializing in the biological sciences and clinical medicine .. open access. Open access ( publishing ). academic journal. academic journal. publisher. Academic publishing. biological sciences. biological sciences. clinical medicine. clinical medicine. It was acquired by SAGE Publications in September 2016 .. SAGE Publications. SAGE Publications
not_related.