premise: Japan bounced back to outshine its arch rival China Thursday on Day three of the athletics competition at the East Asian Games, pocketing 10 out of 13 gold medals at stake.
  China, which bagged 18 gold medals over the last two days against Japan's four, picked up the three other, in the men's javelin, men's long jump and women's 1,500m.
  In a demonstration of its depth in sprinters, Japan swept both 4x100m relay events.
  China had to replace Jin Ke with triple jumper Gu Junjie in the men's relay team after Jin injured his leg in Tuesday's 100m final.
  The makeshift Chinese team finished a disappointed third in 39. 90 seconds, just 0.01 second behind runners-up Chinese Taipei. Japan crossed the line in 39.61.
   What was facilitated because of Japan crossing the line in 39.61?
hypothesis: Japan bounced back