With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kris Jenner has yet to have a child.
text_B: Marilyn Strickland -LRB- born 1962 -RRB- is an American politician and Mayor of the City of Tacoma , Washington .. American politician. Politics of the United States. Mayor. Mayor
not_related.