With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Fog is a form that water occurs in nature as.
text_B: Hans Richter -LRB- 12 January 1919 -- 5 October 2008 -RRB- was a German film actor .. He appeared in more than 130 films between 1931 and 1984 , mostly in supporting roles .. He was born in Brandenburg , Germany and died in Heppenheim , Germany .. Brandenburg. Brandenburg. Heppenheim. Heppenheim
not_related.