With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Super Bowl XLVI was played in Indianapolis, Indiana.
text_B: Channa marulius -LRB- bullseye snakehead or great snakehead -RRB- is a large species of snakehead native to South and Southeast Asia , as well as southern China .. snakehead. Snakehead ( fish ). South. South Asia. Southeast Asia. Southeast Asia. It has been introduced to the United States , where considered invasive .. introduced. Introduced species. invasive. Invasive species
not_related.