With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joan Cusack was in a romantic comedy-drama film and she is American.
text_B: Herman Waldmann FRS FMedSci -LRB- born 27 February 1945 -RRB- is a British immunologist known for his work on therapeutic monoclonal antibodies .. FRS. Fellow of the Royal Society. FMedSci. Academy of Medical Sciences. immunologist. immunologist. monoclonal antibodies. Monoclonal antibody. As of 2013 , he is Emeritus Professor of Pathology at the Sir William Dunn School of Pathology at the University of Oxford .. University of Oxford. University of Oxford
not_related.