With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: One of President Bush 's sons has informed White House Chief of Staff John Sununu that he has lost much of his support among Republicans , prompting an intense effort by Sununu to hold on to his job by demonstrating his GOP backing , White House and Republican sources said Monday .
text_B: The informing happened
entailed.