With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mirka Federer is Slovene-born.
text_B: was a Japanese singer and tarento .. She was born in Koriyama , Fukushima Prefecture .. Koriyama. Koriyama. Fukushima Prefecture. Fukushima Prefecture. She graduated from Shoshi Koto High School .. She was nicknamed .. She was represented with Happy Strike .. She had seven cases of malignant brain tumor removal surgeries .. brain tumor. brain tumor. Her sister is Miss iD 2016 finalist and Go Yoshida Award winner Yuka Maruyama .
not_related.