With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Some of Sansui 's fellow audio - specialty companies , such as Aiwa Co. and Pioneer Electric Corp. , responded to the challenge by quickly bringing out mini - component products of their own , by moving heavily into the booming compact disk businesses or by diversifying into other consumer - electronics fields , including laser disks or portable cassette players .
text_B: The responding did not happen
not-entailed.