With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Linda McCartney was an activist for animal rights.
text_B: This is a survey of the postage stamps and postal history of Fiji .. postal history. postal history. Fiji. Fiji. Fiji is an island nation in Melanesia in the South Pacific Ocean about 2,000 km northeast of New Zealand 's North Island .. Fiji. Fiji. Melanesia. Melanesia. Pacific Ocean. Pacific Ocean. It is a former British colony .
not_related.