With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Athletics at the Summer Olympics includes track and field events.
text_B: Athletics has been contested at every Summer Olympics since the birth of the modern Olympic movement at the 1896 Summer Olympics .. Athletics. Athletics ( sport ). Summer Olympics. Summer Olympics. 1896 Summer Olympics. 1896 Summer Olympics. The athletics program traces its earliest roots to events used in the ancient Greek Olympics .. ancient Greek Olympics. ancient Greek Olympics. The modern program includes track and field events , road running events , and racewalking events .. track and field. track and field. road running. road running. racewalking. racewalking. Cross country running was also on the program in earlier editions but it was dropped after the 1924 Summer Olympics .. Summer Olympics. Summer Olympics. Cross country running. Cross country running. 1924 Summer Olympics. 1924 Summer Olympics
related.