With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Austria was re-established as a sovereign state in 1955.
text_B: Theiler 's Murine Encephalomyelitis Virus -LRB- TMEV -RRB- is a single-stranded RNA murine cardiovirus from the family Picornaviridae .. Picornaviridae. Picornaviridae. RNA. RNA. murine. murine. cardiovirus. cardiovirus. It has been used as a mouse model for studying virally induced paralysis , as well as encephalomyelitis comparable to Multiple sclerosis .. paralysis. paralysis. encephalomyelitis. encephalomyelitis. Multiple sclerosis. Multiple sclerosis. mouse. mouse. Depending on the mouse and viral strain , viral pathogenesis can range from negligible , to chronic or acute encephalomyelitis .. encephalomyelitis. encephalomyelitis. mouse. mouse. viral strain. viral strain. viral pathogenesis. viral pathogenesis
not_related.