With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Unfortunately for those eager to indefinitely carry on with the lucrative business of conflict resolution in South Asia , Pervez Musharraf has now called Colin Powell 's bluff , challenging him to deliver on his frequent statements implying that the Indians jump to his commands .
text_B: The challenging did not happen
not-entailed.