With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: KIBAKI 's reelection in December 2007 brought charges of vote rigging from ODM candidate Raila ODINGA and unleashed two months of violence in which as many as 1,500 people died .
text_B: KIBAKI is an artefact
not-entailed.