With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The World Senior Chess Championship happens weekly.
text_B: Turks in Switzerland -LRB- Isvicre ` deki Turkler -RRB- are Swiss citizens of Turkish origin .. Turkish. Turkish people. Swiss. Switzerland. Over the last two decades , there has been a significant increase in the diversity of culture , language and customs in the Swiss population .. Swiss. Switzerland. Significant levels of Muslim emigration to Switzerland began in the late 1960s with the arrival of labour migrants from Turkey .. Turkey. Turkey
not_related.