With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Medina became the capital of the first Muslim Empire.
text_B: The President of Finland is Finland 's head of state .. President of Finland. President of Finland. Finland. Finland. head of state. head of state. Under the Constitution of Finland , executive power is vested in the president and the government , with the president possessing limited powers .. Finland. Finland. Constitution of Finland. Constitution of Finland. Since 1991 no president may be elected for more than two consecutive terms .. Presidents used to be elected indirectly , by an electoral college or by Parliament , but since 1994 the president has been elected directly by the people for a term of six years .. The president must be a native-born Finnish citizen .. Finnish citizen. Finnish citizen. The office was established by the Constitution Act of 1919 .. The current office-holder is Sauli Niinisto .. Sauli Niinisto. Sauli Niinisto
not_related.