With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Shingles is more common among younger people.
text_B: Walter Anibal Acevedo -LRB- born February 16 , 1986 -RRB- is an Argentine football midfielder who last played for Defensa y Justicia .. Defensa y Justicia. Defensa y Justicia. Argentine. Argentina. football. Association football
not_related.