With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Newcastle United F.C. has been under-performing every year.
text_B: Erythema multiforme -LRB- EM -RRB- is a skin condition of unknown cause ; it is a type of erythema possibly mediated by deposition of immune complexes -LRB- mostly IgM-bound complexes -RRB- in the superficial microvasculature of the skin and oral mucous membrane that usually follows an infection or drug exposure .. skin condition. cutaneous condition. erythema. erythema. IgM. immunoglobulin M. microvasculature. Microcirculation. oral mucous membrane. oral mucosa. It is an uncommon disorder , with peak incidence in the second and third decades of life .. The disorder has various forms or presentations , which its name reflects -LRB- multiforme , `` multiform #Adjective '' , from multi - #Prefix + forma #Latin -RRB- .. Target lesions are a typical manifestation .. Two types , one mild to moderate and one severe , are recognized -LRB- erythema multiforme minor and erythema multiforme major -RRB- .. erythema. erythema. erythema multiforme minor. erythema multiforme minor. erythema multiforme major. erythema multiforme major
not_related.