With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kick-Ass is based on a movie by Mark Millar.
text_B: Line U1 is a line on the Vienna U-Bahn metro system .. Vienna U-Bahn. Vienna U-Bahn. metro. rapid transit. It currently has 19 stations and it runs 14.5 km from to .. Currently , the extension to Oberlaa is under construction , and when complete in 2017 , the line will become the longest on the network , succeeding the length of .. It is connected to and at , at , at and at .. The line opened on 25 February 1978 .
not_related.