Assertion: air guitar | /r/HasAspect | seminal moment
Facets:
value: at the woodstock music festival
type: LOCATION
value: in 1969
type: TEMPORAL
Source sentences:
text: Air guitar itself had a seminal moment at the Woodstock music festival in 1969 when singer Joe Cocker mimicked the playing of the keyboard and guitar during his performance of "With a Little Help From My Friends".