With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jensen Ackles was born on March 1, 1978 at 10:05 AM.
text_B: The square of opposition is a diagram representing the relations between four categorical propositions .. The origin of the square can be traced back to Aristotle making the distinction between two oppositions  : contradiction and contrariety .. Aristotle. Aristotle. contradiction. contradiction. But Aristotle did not draw any diagram .. Aristotle. Aristotle. This was done several centuries laters by Apuleius and Boethius .. Apuleius. Apuleius. Boethius. Boethius
not_related.