With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dysphonia can be characterized by harsh or rough vocal qualities.
text_B: Davy Klaassen -LRB- born 21 February 1993 -RRB- is a Dutch footballer who captains Dutch side Ajax .. Ajax. AFC Ajax. footballer. Association football. captains. Captain ( association football ). He also plays for the Netherlands national team , and is usually deployed as an attacking midfielder for both club and country .. Netherlands. Netherlands national football team. Netherlands national team. Netherlands national football team. attacking midfielder. Midfielder ( association football )
not_related.