With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Amy Adams portrayed Margaret Keane.
text_B: Sir Mark Rainsford -LRB- circa 1652 -- 28 November 1709 -RRB- was an Irish Lord Mayor of Dublin and the original founder of what was to become the Guinness Brewery .. Dublin. Dublin. Guinness Brewery. Guinness Brewery. Irish. Irish people. Lord Mayor of Dublin. Lord Mayor of Dublin
not_related.