With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Grant Gustin performed in a television series.
text_B: The third season of the American television drama series Falling Skies was renewed on July 11 , 2012 for a total of 10 episodes .. television drama. television drama. Falling Skies. Falling Skies. The season premiered on June 9 and ended on August 4 , 2013 .. On July 2 , 2013 , TNT renewed the show for a fourth season .. TNT. TNT ( TV channel )
not_related.