Premise: Attack on Titan . The series began in Kodansha 's Bessatsu Shōnen Magazine on September 9 , 2009 , and has been collected into 22 tankōbon volumes as of April 2017 .
Hypothesis: Attack on Titan did not begin in Kodansha's Bessatsu Shōnen Magazine on September 9, 2009.
Label: ENTAILMENT