With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ben Affleck began his campaign as a child.
text_B: David Soto Sanchez -LRB- born 16 October 1993 -RRB- is a Spanish footballer who plays for CD Boiro as a central defender .. Boiro. CD Boiro. footballer. Association football. CD Boiro. CD Boiro. central defender. Defender ( association football )#Centre-back
not_related.