With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dennis Hastert has been an incumbent since 1984.
text_B: The coat of arms of Serbia is a re-introduction of the coat of arms of the Kingdom of Serbia -LRB- 1882 -- 1918 -RRB- adopted by the Republic of Serbia in 2004 and later slightly redesigned in 2010 .. Republic of Serbia. Republic of Serbia. coat of arms. coat of arms. Serbia. Serbia. Kingdom of Serbia. Kingdom of Serbia. The coat of arms consists of two main heraldic symbols which represent the national identity of the Serbian people across the centuries , the Serbian eagle -LRB- a white double-headed eagle adopted from the Nemanjic dynasty -RRB- and the Serbian cross -LRB- or cross with fire-steels -RRB- .. coat of arms. coat of arms. Serbian eagle. Serbian eagle. Nemanjic dynasty. Nemanjic dynasty. Serbian cross. Serbian cross
not_related.