With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jim Crow laws were enforced until the sixties.
text_B: Derby is a former United Kingdom Parliamentary constituency .. Parliamentary. Parliament of the United Kingdom. constituency. United Kingdom constituencies. It was a constituency of the House of Commons of the Parliament of England , then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1950 .. constituency. United Kingdom constituencies. House of Commons. British House of Commons. Parliament of England. Parliament of England. Parliament of Great Britain. Parliament of Great Britain. Parliament of the United Kingdom. Parliament of the United Kingdom. It was represented by two members of parliament .. It was divided into the single-member constituencies of Derby North and Derby South in 1950 .. Derby North. Derby North ( UK Parliament constituency ). Derby South. Derby South ( UK Parliament constituency )
not_related.