With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul Thomas Anderson directed The Master.
text_B: Richard Van Pham is a US citizen -LRB- originally from Vietnam -RRB- who survived three and a half months adrift in the Pacific Ocean from late May to September 2002 .. Vietnam. Vietnam. Pacific Ocean. Pacific Ocean
not_related.