With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: WHO 's regional director for the Western Pacific , Shigeru Omi says that seeing the tissue samples would allow researchers to know what changes the virus is undergoing , which would be crucial to developing an effective vaccine to contain the spread of the disease .
text_B: Western Pacific , Shigeru Omi is an organization
entailed.