With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: On the political front , the leading contender to be the next prime minister , Ibrahim al-Jaafari , met Friday in Najaf with Iraq 's top Shi'ite religious authority , Grand Ayatollah Ali al-Sistani .
text_B: Najaf is a time or duration of time
not-entailed.