I want to know the answer to the following question:
When did Shiba Yoshimasa die?
All the background I'm provided with is that "Feudal lords such as Shiba Yoshimasa (1350–1410 AD) stated that a warrior looked forward to a glorious death in the service of a military leader or the Emperor: "It is a matter of regret to let the moment when one should die pass by....". Is that enough to answer the question?