With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: G-Dragon was the first Korean solo artist to a type of tour.
text_B: The Scott Viking 2 was the first British high performance two seat sailplane , flying a few days before the outbreak of World War II .. World War II. World War II. Only one was built ; it was used in radar station trials in the Summer of 1940 .
not_related.