With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: History of art includes various subjects.
text_B: The Army of the Czech Republic -LRB- Armada Ceske republiky , ACR -RRB- comprise the Czech Land Forces , the Czech Air Force and support units .. Czech Land Forces. Czech Land Forces. Czech Air Force. Czech Air Force. Czech Republic. Czech Republic. From the late 1940s to 1989 , the extensive Czechoslovak People 's Army -LRB- about 200,000 -RRB- formed one of the pillars of the Warsaw Pact military alliance .. Warsaw Pact. Warsaw Pact. After the dissolution of Czechoslovakia , the Czech Republic is completing a major reorganisation and reduction of the armed forces , which intensified after the Czech Republic joined NATO on 12 March 1999 .. Czech Republic. Czech Republic. armed forces. armed forces. NATO. NATO. As defined by the Czech Law No. 219 / 1999 Coll. , the Armed Forces of the Czech Republic -LRB- Ozbrojene sily Ceske republiky -RRB- are the military forces of the Czech Republic .. Armed Forces of the Czech Republic. Armed Forces of the Czech Republic. Czech Republic. Czech Republic. Czech Law. Law of the Czech Republic. They consist of the Army of the Czech Republic , the Military Office of President of the Republic and the Castle Guard .. President of the Republic. President of the Czech Republic. Czech Republic. Czech Republic. Castle Guard. Prague Castle Guard
not_related.