With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Chess was viewed as a game by the Italian Consejo Superior de Deportes.
text_B: Zurich Opera House -LRB- -LSB- Opernhaus Zurich , links = no -RSB- -RRB- is an opera house in the Swiss city of Zurich .. opera house. opera house. Zurich. Zurich. Zurich Opera. Zurich Opera. Located at the Sechselautenplatz , it has been the home of the Zurich Opera since 1891 , and also houses the Bernhard-Theater Zurich .. Zurich. Zurich. Sechselautenplatz. Sechselautenplatz, Zurich. Zurich Opera. Zurich Opera. Bernhard-Theater Zurich. Bernhard-Theater Zurich. It is also home to the Zurich Ballet .. Zurich. Zurich. Zurich Ballet. Zurich Ballet
not_related.