With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The RMS Titanic left Southampton in the 1910s.
text_B: The Fujifilm X-Pro1 is a mirrorless interchangeable-lens digital camera announced in January 2012 and launched in March 2012 .. Fujifilm. Fujifilm. mirrorless interchangeable-lens. Mirrorless interchangeable-lens camera. It is part of Fujifilm 's X-Series of cameras .. Fujifilm. Fujifilm. X-Series. Fujifilm X-series. In October 2012 Fujifilm has released a very similar , yet smaller , camera named the X-E1 .. Fujifilm. Fujifilm. X-E1. Fujifilm X-E1. In January 2016 Fujifilm announced its successor the X-Pro2 .. Fujifilm. Fujifilm. X-Pro2. Fujifilm X-Pro2
not_related.