With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Host stars a singer.
text_B: Jacob Allen Abel -LRB- born November 18 , 1987 -RRB- is an American actor and singer who is known for playing Adam Milligan in the CW series Supernatural -LRB- 2009 -- 10 -RRB- , Luke Castellan in the film adaptation of Percy Jackson & the Olympians  : The Lightning Thief -LRB- 2010 -RRB- , and its sequel , Percy Jackson  : Sea of Monsters -LRB- 2013 -RRB- , Mark James in the film adaptation of I Am Number Four -LRB- 2011 -RRB- , and Ian O'Shea in The Host -LRB- 2013 -RRB- .. Adam Milligan. Characters of Supernatural#Adam Milligan. Supernatural. Supernatural ( U.S. TV series ). Luke Castellan. Luke Castellan. I Am Number Four. I Am Number Four ( film ). The Host. The Host ( 2013 film )
related.