With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Iris Murdoch was an Irish novelist.
text_B: The Sarakata is one of the longest rivers of Vanuatu .. Vanuatu. Vanuatu. It flows into Velit Bay to the west of Luganville on the southeast of the island of Espiritu Santo .. Velit Bay. Velit Bay. Luganville. Luganville. Espiritu Santo. Espiritu Santo. Unity Park on the Segond Channel near the mouth of the river was the location of John F. Kennedy 's PT-109 base while awaiting transfer to the Solomon Islands during World War II .. John F. Kennedy. John F. Kennedy. PT-109. Motor Torpedo Boat PT-109. The Japanese are planning a hydroelectric power station in the vicinity .
not_related.