With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: While the Indian army has become rock - solid in the western front , and has developed the capability of withstanding any Pakistani adventure in that sector , it has become highly vulnerable in its eastern sector , where its enemy is not a national army but a multitude of secessionist , terrorist and drug - running militants operating between Southeast Asia and northeastern India through Bangladesh .
text_B: The becoming happened
entailed.