With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bentley only markets planes.
text_B: The Papua New Guinean ambassador in Washington , D. C. is the official representative of the Government in Port Moresby to the Government of the United States .. United States. United States. ambassador. ambassador. Port Moresby. Port Moresby
not_related.