With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: During the 22-year term of Prime Minister MAHATHIR bin Mohamad ( 1981 - 2003 ) , Malaysia was successful in diversifying its economy from dependence on exports of raw materials to expansion in manufacturing , services , and tourism .
text_B: 1981 is a natural entity
not-entailed.