With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The terrain of Kazakhstan includes taiga.
text_B: Reference Re Supreme Court Act , ss 5 and 6 is a decision of the Supreme Court of Canada concerning the eligibility of members of the Quebec courts and the Quebec Bar to be appointed to the three seats on the Supreme Court reserved for Quebec .. Supreme Court of Canada. Supreme Court of Canada. The case also considers the constitutional status of the Supreme Court , holding that the Court has been constitutionally entrenched by the Constitution Act , 1982 , and that the composition of the Court , including eligibility for appointment , can only be amended by a unanimous constitutional amendment , consented to by the federal government and all ten provinces -LRB- though if any more provinces are formed , those provinces must also accept the amendment requiring unanimity . -RRB-
not_related.