With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Witnesses say the massive brawl erupted Sunday when several hundred Fatah backers at the West Bank 's Hebron University started shouting their own party 's slogans in the midst of a large Hamas campaign rally for student council elections .
text_B: Fatah is an artefact
not-entailed.