With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Seth Rogen moved to Portland, Oregon in 1980.
text_B: Tonga , by a modification of its treaty of friendship with the United Kingdom in July 1970 , is responsible for its own external affairs .. Tonga. Tonga. It maintains cordial relations with most countries and has close relations with its Pacific neighbours and the United Kingdom .. In 1998 , it recognized the People 's Republic of China and broke relations with Taiwan .. Taiwan. Republic of China
not_related.