Assertion: aikido's technique | /r/Desires | long time
Facets:
value: several years,
type: TEMPORAL
value: very
type: DEGREE
value: usually
type: TEMPORAL
Source sentences:
text: Aikido’s techniques can be subtle and usually require a very long time, several years, to be practiced to a level of proficiency to be useful in self defence; TKD can start to be effective with some of its techniques within a few months or a year of practice.