With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Al Gore was the subject of online harassment.
text_B: Sisworo Gautama Putra -LRB- May 26 , 1938 -- January 5 , 1993 -RRB- was an Indonesian film director and screenwriter , best known for his work in the horror film genre .. horror film. horror film
not_related.