(=>
(albumRelease ?A ?T)
(and
(exists (?R1 ?DS1)
(releaseForSale
(AlbumCopiesFn ?A ?DS1) ?R1 ?T))
(not
(exists (?B ?R2 ?DS2)
(and
(before ?B ?T)
(releaseForSale
(AlbumCopiesFn ?A ?DS2) ?R2 ?B)))))) |
Music.kif 261-270 |
If X was released on Y, then there exist Z and W such that the set of copies on W of X was released for sale in Z at Y and there don't exist V, U, T such that V happens before Y, and the set of copies on T of X was released for sale in U at V |