Assertion: japanese martial art | /r/HasProperty | developed in 30
Facets:
value: by founder morihei ueshiba
type: OTHER
value: originally
type: TEMPORAL
Source sentences:
text: Originally developed in the late 1920s and ’30s by founder Morihei Ueshiba, this Japanese martial art is a synthesis and continuation of another ancient fighting system known as Daitō-ryū Aiki-jūjutsu.