With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Iran comprises a land area of 1,648,195 square kilometers.
text_B: The Roman Catholic Diocese of Jining -LRB- Zinimen -LRB- sis -RRB- , -RRB- is a diocese located in the city of Jining in the Ecclesiastical province of Suiyuan in China .. China. China. Suiyuan. Roman Catholic Archdiocese of Suiyuan. diocese. diocese. Jining. Jining, Shandong. Ecclesiastical province. Ecclesiastical province
not_related.