With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: International Relations includes many subject matters.
text_B: Kenneth Merwin Curtis -LRB- born February 8 , 1931 -RRB- is an American lawyer and former politician .. He is currently a principal in the law firm of Curtis Thaxter Stevens Broder & Micoleau Limited Liability Company , P.A.. law firm. law firm
not_related.